Publications by authors named "Yukinori Asada"

25 Publications

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Early enteral nutrition after head and neck surgery with free tissue transfer reconstruction.

Auris Nasus Larynx 2021 Jul 1. Epub 2021 Jul 1.

Department of Head and Neck Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medeshima-Shiode, Natori, Miyagi 981-1293, Japan.

Objective: Early enteral nutrition is essential for enhancing recovery after surgery. However, to date, no detailed study has been conducted on the feasibility of early enteral nutrition in patients undergoing head and neck surgery with free tissue transfer reconstruction (HNS-FTTR) and the risk factors for difficulty with early enteral nutrition.

Methods: We retrospectively analyzed 102 patients who underwent HNS-FTTR at our institution; 61 underwent free jejunal reconstruction (FJ) and 41 did not. We investigated the achievement of early enteral nutrition within 24 and 48 h after surgery and the discontinuation of enteral nutrition after its initiation within 7 days after surgery.

Results: Enteral nutrition could be started in 81/102 (79.4%) and 99/102 (97.1%) patients within 24 and 48 h, respectively. Cases of difficulty with early enteral nutrition accounted for 21/102 (20.6%) patients. The multivariate analysis revealed that FJ was a significant independent risk factor for difficulty with early enteral nutrition (odds ratio: 4.054, P = 0.042). The risk factors for difficulty with early enteral nutrition in patients who underwent FJ were also investigated, and the multivariate analysis showed that blood loss of ≥158 mL was a significant independent risk factor (odds ratio: 3.505, P = 0.044).

Conclusions: Early enteral nutrition seemed to be provided with no problems in patients without FJ. FJ was a significant risk factor for difficulty with early enteral nutrition. Increased intraoperative blood loss was a significant risk factor for difficulty with early enteral nutrition in patients undergoing FJ; therefore, patients' abdominal symptoms and gastric residual volume should be carefully monitored in such cases.
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http://dx.doi.org/10.1016/j.anl.2021.06.004DOI Listing
July 2021

Transoral surgery for superficial head and neck cancer: National Multi-Center Survey in Japan.

Cancer Med 2021 Jun 15;10(12):3848-3861. Epub 2021 May 15.

Department of Gastroenterology, Kobe City Medical Center General Hospital, Kobe, Japan.

Head and neck cancers, especially in hypopharynx and oropharynx, are often detected at advanced stage with poor prognosis. Narrow band imaging enables detection of superficial cancers and transoral surgery is performed with curative intent. However, pathological evaluation and real-world safety and clinical outcomes have not been clearly understood. The aim of this nationwide multicenter study was to investigate the safety and efficacy of transoral surgery for superficial head and neck cancer. We collected the patients with superficial head and neck squamous cell carcinoma who were treated by transoral surgery from 27 hospitals in Japan. Central pathology review was undertaken on all of the resected specimens. The primary objective was effectiveness of transoral surgery, and the secondary objective was safety including incidence and severity of adverse events. Among the 568 patients, a total of 662 lesions were primarily treated by 575 sessions of transoral surgery. The median tumor diameter was 12 mm (range 1-75) endoscopically. Among the lesions, 57.4% were diagnosed as squamous cell carcinoma in situ. The median procedure time was 48 minutes (range 2-357). Adverse events occurred in 12.7%. Life-threatening complications occurred in 0.5%, but there were no treatment-related deaths. During a median follow-up period of 46.1 months (range 1-113), the 3-year overall survival rate, relapse-free survival rate, cause-specific survival rate, and larynx-preservation survival rate were 88.1%, 84.4%, 99.6%, and 87.5%, respectively. Transoral surgery for superficial head and neck cancer offers effective minimally invasive treatment. Clinical trials registry number: UMIN000008276.
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http://dx.doi.org/10.1002/cam4.3927DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8209601PMC
June 2021

Discovery of a chemical compound that suppresses expression of BEX2, a dormant cancer stem cell-related protein.

Biochem Biophys Res Commun 2021 01 4;537:132-139. Epub 2021 Jan 4.

Division of Cancer Stem Cells, Miyagi Cancer Center Research Institute, 47-1, Medeshima-Shiode, Natori, Miyagi, Japan. Electronic address:

Cancer stem cells (CSCs) are believed to cause cancer metastasis and recurrence. BEX2 (brain expressed X-linked gene 2) is a CSC-related gene that is expressed in dormant CSCs in cholangiocarcinoma and induces resistance against chemotherapy. The aim of the present study was to identify small compounds that have activity to inhibit BEX2 expression and result in the attenuation of CSC-related phenotypes. We screened 9600 small chemical compounds in high-throughput screening using cholangiocarcinoma cell line HuCCT1 expressing BEX2 protein fused with NanoLuc, and identified a compound, BMPP (1, 3-Benzenediol, [4-(4-methoxyphenyl)-1H-pyrazol-3-yl]). BMPP was found to exert decreasing effects on BEX2 protein expression and G phase population of the tumor cells, and increasing effects on ATP levels and chemotherapeutic sensitivity of the cells. These findings indicate that BMPP is a valuable chemical compound for reducing dormant CSC-related phenotypes. Thus, the identification of BMPP as a potential CSC suppressor provides scope for the development of novel therapeutic modalities for the treatment of cancers with BEX2 overexpressing CSCs.
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http://dx.doi.org/10.1016/j.bbrc.2020.11.022DOI Listing
January 2021

A Case of Ectopic Thyroid Presenting as a Superior Mediastinal Mass.

Cureus 2020 Aug 3;12(8):e9541. Epub 2020 Aug 3.

Head and Neck Surgery, Miyagi Cancer Center, Natori, JPN.

We report a very rare case of an ectopic thyroid in the superior mediastinum, which was detected incidentally using imaging. The case was a 50-year-old woman patient. She had an orthotopic thyroid and normal thyroid function. This superior mediastinum mass obviously lacked continuity with the orthotopic thyroid. Its computed tomography density was lower than that of the orthotopic thyroid, and an enhancement was heterogeneously observed. In the cytodiagnosis, only large and small lymphocytes were observed, and malignant diseases such as malignant lymphoma could not be ruled out, so surgical resection was performed through a cervical incision. Combined resection of the thyroid was unnecessary, and ligation of the feeding vessels from the thorax side was able to be carried out without incident.
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http://dx.doi.org/10.7759/cureus.9541DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7470671PMC
August 2020

Enhanced recovery after surgery program involving preoperative dexamethasone administration for head and neck surgery with free tissue transfer reconstruction: Single-center prospective observational study.

Surg Oncol 2020 Sep 1;34:197-205. Epub 2020 May 1.

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan.

Background: There are few reports on Enhanced Recovery After Surgery (ERAS)-based perioperative management following head and neck surgery with free tissue transfer reconstruction (HNS-FTTR). Here, we prospectively evaluated our ERAS program involving preoperative glucocorticoid administration in HNS-FTTR.

Methods: This prospective study included 60 patients who underwent HNS-FTTR at the Miyagi Cancer Center from June 2017 to December 2018. Their treatment plan included receiving perioperative management in accordance with our head and neck ERAS program. Major outcomes of hospitalization periods, early mobilization, early enteral nutrition, and patient satisfaction were assessed, and blood date and vital signs were compared with control patients who underwent HNS-FTTR from January 2014 to September 2016 at our institution before ERAS was implemented.

Results: The duration of hospital stay and the duration until completion of the discharge criteria was a median of 25 days and 17 days, respectively. Early mobilization was achieved in 86.0% of the patients at postoperative-day (POD)1 and 96.5% at POD2. Enteral nutrition was started in 80.1% at POD1 and 100% at POD2. Postoperative pain was controlled at mean VAS scores of 1.51-3.13. Clavien-Dindo grade II or higher postoperative complications were evident in 27.6% of the patients. The mean QOR40 score was 179.6 preoperatively, 146.1 at POD3, and 167.8 at POD7. Compared with the control group, there were significantly lower C-reactive protein levels, higher albumin levels, a lower body temperature, a lower neutrophil-to-lymphocyte ratio, less body weight fluctuation, and fewer incidences of decreased blood pressure in the ERAS group.

Conclusion: Patients who underwent HNS-FTTR with ERAS-based perioperative management achieved early mobilization, early enteral nutrition, favorable pain control, remarkable recovery of patient satisfaction at POD7, and there was evidence of better hemodynamic stability and less inflammatory response compared with control patients.
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http://dx.doi.org/10.1016/j.suronc.2020.04.025DOI Listing
September 2020

Shoulder function after neck dissection: Assessment via a shoulder-specific quality-of-life questionnaire and active shoulder abduction.

Auris Nasus Larynx 2021 Feb 22;48(1):138-147. Epub 2020 Jul 22.

Department of Head and Neck Surgery, Miyagi Cancer Center, 47-1 Nodayama, Medeshima-Shiode, Natori 981-1293, Miyagi, Japan; Department of Head and Neck Surgery, National Cancer Center East, Kashiwa, Chiba, Japan.

Objective: Neck dissection results in a high probability of postoperative shoulder functional impairment, even when the spinal accessory nerve is preserved. Therefore, surgeons must inform patients about the expected functional and qualitative recovery of shoulder function after surgery.

Methods: The present study included a prospective cohort of 66 patients (85 neck dissection sides) who underwent neck dissection between December 2015 and July 2017 at a single institution. The active shoulder abduction angles of the affected side and the patient-reported shoulder-specific quality-of-life recovery score of the Western Ontario Rotator Cuff (WORC) questionnaire were examined at 1, 3, 6, 9, and 12 months postoperatively. Additionally, the association between these outcomes and risk factors for shoulder impairment were investigated.

Results: The average active shoulder abduction angles were significantly improved at 3 and 6 months postoperatively compared with 1 month postoperatively (96.5 ± 4.3° at 1 month versus 110.1 ± 4.7° at 3 months, p = 0.035, and versus 142.0 ± 4.6° at 6 months, p < 0.0001). The proportion of patients who were unable to abduct their shoulders by 150° or more was significantly lower at 6 months postoperatively (41.5%) compared with 1 month postoperatively (82.4%, p < 0.0001). The WORC score significantly improved from 60.4 ± 2.4% at 1 month postoperatively to 67.9 ± 2.6% at 6 months postoperatively (p = 0.036). Multivariate analysis revealed that postoperative radiotherapy was a significant risk factor for shoulder impairment at 3 and 6 months postoperatively (p = 0.003 and p = 0.027, respectively), and that level V dissection and head and neck irradiation were significant risk factors for a worse shoulder outcome at 6 and 9 months postoperatively (respective p values for level V dissection and head and neck irradiation were p = 0.049 and p = 0.030 at 6 months postoperatively, and p = 0.016 and p = 0.013 at 9 months postoperatively).

Conclusion: Satisfactory functional and qualitative recovery of shoulder function was achieved at 6 months after neck dissection. Postoperative radiotherapy was a predictor of poor shoulder function in the early postoperative period; both level V dissection and head and neck irradiation were predictors of poor shoulder function at 6 and 9 months after neck dissection.
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http://dx.doi.org/10.1016/j.anl.2020.06.013DOI Listing
February 2021

The impact of preoperative screening system on head and neck cancer surgery during the COVID-19 pandemic: Recommendations from the nationwide survey in Japan.

Auris Nasus Larynx 2020 Aug 16;47(4):687-691. Epub 2020 May 16.

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan.

Objective: the pandemic of coronavirus disease 2019 (COVID-19), hospitals worldwide are at risk of nosocomial infection. Preoperative identification of COVID-19 in patients who are scheduled to be admitted to the hospital is essential to preventing the collapse of medical facility. In Japan, the preoperative observation and screening tests with the RT-PCR testing for the new coronavirus (SARS-CoV-2) and chest CT scan are recommended for head and neck cancer surgery during the COVID-19 pandemic.

Method: We conducted surveys of the current situation in Japan through the internet.

Results: Chest CT scan was fully performed (90%), but the RT-PCR testing was not adequately performed (51%).

Conclusion: Although the current screening system can be considered effective to a certain extent, we recommend further widespread use of pre-admission RT-PCR testing not only for patients with head and neck cancer surgery but also for all the hospitalized patients, in order to promote safer treatments, during the COVID-19 pandemic.
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http://dx.doi.org/10.1016/j.anl.2020.05.006DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7229909PMC
August 2020

Establishment of a Monoclonal Antibody That Recognizes Cysteine-Rich Domain 1 of Human CD271.

Monoclon Antib Immunodiagn Immunother 2020 Feb;39(1):6-11

Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Japan.

CD271 is a common receptor for all neurotrophins that is localized to neurons, endothelial cells, and the basal layer of the epithelium in normal tissue. Recently, we and others reported that CD271 plays essential roles in the development of squamous cell carcinoma, especially in tumor-initiating cells. Since little is known about how CD271 regulates cancer cell initiation and proliferation, antibodies that recognize different domains of CD271 are needed to enable investigation. Therefore, this study aimed to develop an antihuman CD271 antibody by immunizing mice with a CD271 antigen produced by a baculovirus. The antibody was named hCD271mAb#13, and it recognized cysteine-rich domain 1 with a higher affinity than the commercially available antibody ME20.4. We determined that hCD271mAb#13 is suitable for flow cytometry, Western blotting, immunocytochemistry, and immunohistochemistry of formalin-fixed paraffin-embedded tissue. Use of hCD271mAb#13 for CD271 labeling could enable detailed analyses of cancer cell regulation and other biological processes.
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http://dx.doi.org/10.1089/mab.2019.0040DOI Listing
February 2020

Preoperative prognostic nutritional index as a method to predict postoperative complications after major head and neck surgery with free tissue transfer reconstruction.

Jpn J Clin Oncol 2020 Jan;50(1):29-35

Department of Head and Neck Surgery, National Cancer Center East, Kashiwa, Chiba, Japan.

Background: Head and neck (H&N) cancer patients are often malnourished and have diminished immunity. H&N surgery with free tissue transfer reconstruction (HNS-FTTR) is associated with a relatively high incidence of postoperative complications.

Methods: Associations between possible risk factors and postoperative Clavien-Dindo (C-D) grades ≥ II and ≥ IIIa wound healing- or infection-related complications, postoperative overall complications and prolonged hospital stay were investigated in 188 patients who underwent HNS-FTTR during 2014-2018. The preoperative prognostic nutritional index (PNI) was calculated using the serum albumin level and total lymphocyte count.

Results: C-D ≥ II and ≥ IIIa complications were seen in 66 (35.1%) and 37 (19.7%) patients, respectively. Multivariate analysis showed that (i) previous irradiation was significantly associated with C-D ≥ II wound healing- or infection-related complications and prolonged hospital stays [odds ratio (OR) 3.096 and 3.328; P = 0.007 and 0.008, respectively]; and (ii) operation time of ≥9 h 20 min was a significant risk factor for C-D ≥ IIIa wound healing- or infection-related complications, and C-D ≥ IIIa overall complications (OR 2.987 and 2.257; P = 0.021 and 0.047, respectively). (3) Only preoperative PNI ≤ 40 was associated with all occurrences of C-D ≥ II and ≥ IIIa wound healing- or infection-related complications, C-D ≥ II and ≥ IIIa overall complications, and prolonged hospital stays (OR 3.078, 2.918, 2.627, 3.132 and 3.116; P = 0.020, 0.046, 0.036, 0.023 and 0.025, respectively).

Conclusions: PNI, easily calculated, was the lone risk factor significantly predicting all C-D ≥ II and ≥ IIIa postoperative wound healing- or infection-related complications, C-D ≥ II and ≥ IIIa postoperative overall complications and prolonged hospital stay after HNS-FTTR.
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http://dx.doi.org/10.1093/jjco/hyz133DOI Listing
January 2020

Humanized anti-CD271 monoclonal antibody exerts an anti-tumor effect by depleting cancer stem cells.

Cancer Lett 2019 Oct 17;461:144-152. Epub 2019 Jul 17.

Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, 47-1, Medeshima-Shiode, Natori, Miyagi, Japan. Electronic address:

CD271, known as a neurotrophin receptor, is expressed in various cancers such as hypopharyngeal cancer (HPC) and melanoma. We recently reported that CD271 is a cancer-stem-cell biomarker of HPC, and that its expression is essential for cancer-cell proliferation and is correlated with a poor prognosis in this disease. Here, to develop a therapeutic antibody to CD271, we established a humanized anti-CD271 monoclonal antibody (hCD271 mA b). hCD271 mA b bound to the cysteine-rich domain 1 (CRD1) of human CD271 with high affinity (K = 1.697 × 10 M). In vitro, hCD271 mA b exerted antibody-dependent cell-mediated cytotoxicity (ADCC) activity against SP2/0-CD271 (human CD271-transduced mouse cell line). Treatment with hCD271 mA b also exerted anti-tumor activity in graft models of three cell lines (HPCM2 (patient-derived xenograft cell line of hypopharyngeal cancer), MeWo-Luc (melanoma cell line), and SP2/0-CD271) in mice, resulting in smaller tumors compared to controls and reduced numbers of CD271-positive cells. Collectively, these data suggest that an antibody targeting CD271 is a promising therapeutic strategy.
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http://dx.doi.org/10.1016/j.canlet.2019.07.011DOI Listing
October 2019

Professional Oral Health Care at General Dental Clinic Reduces Postoperative Complications of Head and Neck Free-Flap Reconstruction Surgery.

J Cancer 2019 1;10(1):205-210. Epub 2019 Jan 1.

Department of Head and Neck Surgery, Miyagi Cancer Center.

: Extensive resection and free-flap reconstruction surgery has become the standard treatment for locally advanced head and neck cancer. Surgical site infection (SSI) is one of the serious complications of this treatment. This study aimed to investigate the risk factor for onset of SSI, particularly focusing on whether preoperative professional oral health care in cooperation with general dental clinics is effective in reducing the occurrence of SSI. : From March 2003 to August 2011, 183 patients who underwent head and neck free-flap reconstructive surgery by the same plastic surgeon at Miyagi Cancer Center for Head and Neck Surgery were investigated retrospectively. : Of the 183 patients, 135 and 48 were men and women, respectively, with a mean age of 62 (range, 29-82) years. The tumor was located in the oral cavity (n = 76), hypopharynx (n = 55), oropharynx (n = 28), and others (n = 24). Clinical stages were stage I/II in 18, stage III/IV in 164 patients, and benign tumor in one patient, based on UICC classification. SSI occurred in 66 patients (36.1%). Based on multivariate analysis, professional oral health care [ = 0.0076, odds ratio (OR) = 0.39] and radiation therapy history ( = 0.0214, OR = 2.820) were shown as factors that are significantly related to SSI. : This study identified history of radiation therapy as a significant risk factor for SSI from univariate and multivariate analysis and revealed that patients receiving preoperative professional oral health care at general dental clinics reduce the risk of SSI. Preoperative professional oral health care in cooperation with general dental clinics has been shown to reduce SSI of head and neck free-flap reconstructive surgery.
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http://dx.doi.org/10.7150/jca.26298DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6329870PMC
January 2019

Risk factors for cervical lymph node metastasis in endoscopically resected superficial hypopharyngeal cancers.

Auris Nasus Larynx 2019 Jun 22;46(3):424-430. Epub 2018 Sep 22.

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan.

Objective: Hypopharyngeal cancer is a head and neck cancer with a poor prognosis, and most cases show metastases on diagnosis. Cervical lymph node (LN) metastasis is a poor prognostic factor in hypopharyngeal cancer patients. The identification of risk factors for LN metastasis can help guide surgical treatment strategies for these patients.

Methods: This retrospective study included 93 superficial hypopharyngeal cancer patients with 109 histopathologically examined lesions treated by endoscopic resection between January 2007 and December 2017. Tumor thickness quantification, quantification of budding nests, immunostaining and other histopathological analyses in paraffin-embedded, formalin-fixed tissue sections (3-μm) of surgical specimens were performed by a certified pathologist.

Results: Cervical LN metastasis was positive in 18 out of 93 cases (19.3%) and 18 out of 109 lesions (16.5%). No differences were detected in patient characteristics between LN-positive and LN-negative cases, except for tumor thickness, which was significantly larger in LN-positive cases (3119.4±602.2μm vs. 1015.5±129.6μm, respectively; p<0.0001). Univariate analysis showed that tumor thickness ≥1000μm (odds ratio: 5.559, p=0.003), lesions with high budding grade (odds ratio: 5.188, p=0.01) and vascular invasion (odds ratio: 12.710, p=0.007) were significantly associated with cervical LN metastasis. Multivariate analysis revealed tumor thickness≥1000μm as the most significant risk factor for cervical LN metastasis in superficial hypopharyngeal cancer (odds ratio: 3.639, p=0.04).

Conclusions: We demonstrate for the first time that high budding grade may serve as powerful predictors of LN metastasis and tumor thickness ≥1000μm is a significant risk factor for LN metastasis of superficial hypopharyngeal cancer. These results should be further examined in future larger scale studies.
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http://dx.doi.org/10.1016/j.anl.2018.09.005DOI Listing
June 2019

A Novel Laryngeal Preservation Technique following Total Glossectomy with Hyoid Bone Resection.

Plast Reconstr Surg Glob Open 2018 Apr 9;6(4):e1756. Epub 2018 Apr 9.

Department of Plastic and Reconstructive Surgery, Miyagi Cancer Center, Miyagi, Japan.

Despite the recent progress of chemotherapy and sophisticated radiotherapy, surgery still remains the most reliable treatment for advanced tongue cancers in terms of survival. The major disadvantage of this treatment is that it should sacrifice the quality of patients' life. When the tongue cancer is so advanced as to involve the hyoid bone, which is considered a functional part of the larynx, radical operation needs to resect both the entire tongue and the larynx and the hyoid bone en bloc to prevent aspiration pneumonia. As a result of total laryngectomy, the patients will suffer significant disabilities: aphonia and the loss of deglutition that limits the oral intake to only liquid or pasty food. With this clinical background, we have been contriving to overcome these significant surgical shortcomings by conducting larynx-preserving operation. In this case report, we present our newly devised surgical method which consists of free-flap transfer with a combination of laryngeal suspension and a novel reconstructive technique, that is, epiglottis suspension, which enabled favorable swallowing function without aspiration and allowed a sufficiently wide airway for breathing. The operation worked quite successfully for the patient's quality of life. We believe this novel surgical method would serve as a larynx-preservation treatment for locally advanced tongue cancers with hyoid bone invasion.
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http://dx.doi.org/10.1097/GOX.0000000000001756DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5977942PMC
April 2018

Enhanced Recovery After Surgery program with dexamethasone administration for major head and neck surgery with free tissue transfer reconstruction: initial institutional experience.

Acta Otolaryngol 2018 Jul 31;138(7):664-669. Epub 2018 Jan 31.

a Department of Head and Neck Surgery , Miyagi Cancer Center , Natori , Miyagi , Japan.

Objectives: Enhanced Recovery After Surgery (ERAS) protocols promote recovery after various invasive surgeries. Likewise, preoperative glucocorticoid administration can reduce complications after some surgeries. However, the effects of ERAS protocols and glucocorticoid administration in patients undergoing major surgery for head and neck cancer have not been well described. The aim of this study was to evaluate the effect of an ERAS protocol with preoperative glucocorticoid administration in major surgery for head and neck cancer.

Methods: This retrospective study included 28 patients who underwent major head and neck surgery with free tissue transfer reconstruction at our institution from September 2016 to May 2017, after implementation of an ERAS protocol with preoperative glucocorticoid administration. Outcomes in that group were compared with those in a control group that underwent surgery from January 2015 to September 2016, before implementation of the protocol.

Results: Analysis revealed significantly less body weight fluctuation, lower C-reactive protein levels, higher albumin levels, and lower body temperature in the ERAS group than in the control group postoperatively.

Conclusions: Patients undergoing major surgery for head and neck cancer who were treated with the ERAS protocol and preoperative glucocorticoid administration had evidence of better hemodynamic stability and less inflammatory response than control patients.
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http://dx.doi.org/10.1080/00016489.2018.1429651DOI Listing
July 2018

A Novel Funnel-Shaped Flap for Reconstruction Surgery after Total Laryngopharyngectomy with Total Glossectomy.

Plast Reconstr Surg Glob Open 2017 Sep 22;5(9):e1504. Epub 2017 Sep 22.

Department of Plastic and Reconstructive Surgery, Miyagi Cancer Center, Natori, Japan; Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Japan; and Department of Diagnostic Radiology, Miyagi Cancer Center, Natori, Japan.

Reconstruction following total laryngopharyngectomy with total glossectomy (TLPTG) is challenging. To reconstruct this extended range of mucosal defect, it is necessary to overcome the remarkable discrepancy of apertures of oral and esophageal sides. We report a case of reconstruction surgery for total laryngopharyngectomy with total glossectomy with a funnel-shaped rectus abdominis musclocutaneous flap. The patient recovered without major complications and could keep a relatively good swallowing function. We believe this simple method should contribute to cases with complicated ablation.
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http://dx.doi.org/10.1097/GOX.0000000000001504DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5640374PMC
September 2017

Laryngeal function-preserving operation for T4a laryngeal cancer with vocal cord paralysis - A case report.

Auris Nasus Larynx 2018 Feb 14;45(1):194-199. Epub 2017 Apr 14.

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan.

For locally advanced laryngeal cancers, the standard treatment of choice is chemoradiotherapy if organ function needs to be conserved. Surgical treatment with larynx preservation is conducted only for limited cases. For locally advanced laryngeal cancers such as those with vocal cord fixation and/or cricoid cartilage destruction, there is no apparent standardized organ-preserving surgery keeping the essential laryngeal functions, viz. the airway, deglutition and articulation, uncompromized. Recently, our surgical team saw a patient with T4a advanced laryngeal cancer with vocal cord fixation who aspired to maintain his laryngeal function. Driven by his eagerness, we contrived novel techniques for laryngeal function preservation and performed a two-staged operation. In the first stage, extended vertical partial laryngectomy was conducted including resection of the affected thyroid, arytenoid, and cricoid cartilages, followed by local closure of the hypopharynx. Additionally, laryngeal suspension surgery and cricopharyngeal myotomy were performed in addition to suturing the epiglottis with the intact arytenoid cartilage to enhance swallowing function. In the second stage, airway reconstruction was performed using a local skin flap. As of 10 months after operation, there has been no tumor recurrence, and the reconstructed larynx has been working satisfactorily. In this report we describe an innovative operation that was especially contrived for laryngeal function preservation.
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http://dx.doi.org/10.1016/j.anl.2017.03.012DOI Listing
February 2018

Retrospective observational study of occult cervical lymph-node metastasis in T1N0 tongue cancer.

Jpn J Clin Oncol 2017 02;47(2):130-136

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan.

Objective: Delayed neck metastasis is the most significant prognostic factor for early tongue cancer. The main strategies for controlling cervical lymph nodes in Japan are elective neck dissection or watchful waiting. Elective neck dissection offers significantly better survival, but adversely impacts patient quality of life; consequently, here we investigated how to identify high-risk patients warranting elective neck dissection.

Methods: We retrospectively evaluated 67 patients with T1N0 oral tongue squamous cell carcinoma who underwent primary treatment in our department from April 2001 to March 2015. All the patients underwent watchful waiting alone for neck management. We investigated the rates of occult neck metastasis, prognosis and circumstances of recurrence, and associations with pathological tumor thickness, depth and muscle invasion by the primary tumor. Correlation between the thickness in pathological specimens and that at magnetic resonance imaging was additionally investigated.

Results: Neck recurrence was evident in 20 patients, of which 19 developed within 1 year. Therefore, the rate of occult neck metastasis was 29.9%. Patients with muscle invasion, tumor thickness ≥2 mm or tumor depth ≥2 mm on surgical specimens were significantly more likely to develop delayed neck metastasis. Prognosis was significantly worse for patients with muscle invasion or tumor thickness ≥2 mm. Thickness using magnetic resonance imaging was well correlated with pathological thickness.

Conclusions: Patients with tumors ≥2 mm in thickness or muscle invasion developed neck metastasis, suggesting that elective neck dissection may be warranted for patients with these findings. For preoperative assessment of the need for elective neck dissection, magnetic resonance imaging would be a potential modality for T1N0 tongue cancer.
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http://dx.doi.org/10.1093/jjco/hyw172DOI Listing
February 2017

Late-onset dysphagia caused by severe spastic peristalsis of a free jejunal graft in a case of hypopharyngeal cancer.

Auris Nasus Larynx 2016 Dec 8;43(6):693-7. Epub 2016 Apr 8.

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan.

Free jejunal transfer is the main technique used for reconstructing a circumferential defect caused by total pharyngo-laryngo-cervical-esophagectomy in certain cancer cases. We report a rare case of severe late-onset dysphagia caused by autonomous spastic peristalsis, which led to complete obstruction of the free jejunal route. A 70-year-old man underwent treatment for hypopharyngeal cancer involving total pharyngolaryngectomy with free jejunal transfer. After uneventful peri- and postoperative recovery, he developed sudden-onset severe dysphagia 22 months later. Gastrografin fluoroscopy revealed abnormal peristalsis and contraction of the transferred jejunum, leading to complete obstruction. Nutritional treatment, application of depressants of peristalsis, and xylocaine injection into the outer space of the jejunal mucosa all failed to alleviate the dysphagia. Surgical treatment involving a longitudinal incision of the jejunal graft, and interposing a cutaneous flap, as a fixed wall, between the incised jejunal margins to prevent obstruction was performed. After further reconstructive surgery involving using a pectoralis major musculocutaneous flap and a split-thickness skin graft to close a refractory jejunum-skin fistula, the dysphagia was permanently alleviated. To our knowledge, this is the first report of severe dysphagia caused by peristalsis of a free jejunal graft.
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http://dx.doi.org/10.1016/j.anl.2016.03.011DOI Listing
December 2016

Clear cell carcinoma of the nasal cavity: A case report from histopathological viewpoint.

Auris Nasus Larynx 2016 Feb 30;43(1):108-11. Epub 2015 Jun 30.

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan.

We report an extremely rare case of primary clear cell carcinoma (CCC), not otherwise specified (NOS) of the nasal cavity. An 80-year-old woman was referred to our hospital with left nasal obstruction caused by a nasal cavity tumor. The tumor was resected completely with lateral rhinotomy approach. Histopathological examination revealed CCC. CCC metastasis from renal cell carcinoma (RCC), which is at the top of differential diagnosis, was ruled out by the absence of renal tumor at computed tomography (CT). Also, immunohistochemical results of the specimen with vimentin negative and CK7 focally positive excluded the possibility of RCC metastasis. The patient is free from recurrence 1 year after the surgery, and there is no evidence of RCC. In this report histopathological characteristics, especially immunohistochemical properties of primary CCC, NOS of the nasal cavity are presented together with some clinical features of this rare tumor. Also, we refer to histopathogenesis of primary CCC of nasal cavity in relation to myoepithelial carcinoma. Histopathological discussion is further extended to include other CCC and CCC-resembling histologies to confirm the uniqueness of the present case.
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http://dx.doi.org/10.1016/j.anl.2015.06.002DOI Listing
February 2016

Effect of HMB/Arg/Gln on the prevention of radiation dermatitis in head and neck cancer patients treated with concurrent chemoradiotherapy.

Jpn J Clin Oncol 2014 May 30;44(5):422-7. Epub 2014 Mar 30.

*Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi 981-1293, Japan.

Objective: This prospective randomized Phase II study was designed to evaluate the preventive effect of an oral nutrition supplement composed of beta-hydroxy-beta-methylbutyrate, arginine and glutamine (beta-hydroxy-beta-methylbutyrate/arginine/glutamine) on radiation dermatitis in head and neck cancer patients.

Methods: Forty patients with histologically proven head and neck cancer, treated with concurrent chemoradiotherapy involving cisplatin were recruited. They were randomly assigned to the beta-hydroxy-beta-methylbutyrate/arginine/glutamine supplement treatment group (Group A) or the control group that received no supplement (Group B). The primary endpoint of this study was the percentage of patients developing ≥Grade 3 dermatitis. The secondary endpoints were the percentage of patients developing ≥Grade 2 dermatitis, and the duration of each grade of dermatitis relative to the observation period.

Results: The incidence of ≥Grade 3 dermatitis did not differ between the two groups. However, as secondary endpoints of this study, the incidence of ≥Grade 2 dermatitis was lower in Group A than B (62.6 vs. 94.4%; P < 0.05), and the duration of ≥Grade 1 dermatitis was shorter in Group A than B (44.8 vs. 56.7%; P < 0.01), as was the duration of ≥Grade 2 dermatitis (16.5 vs. 26.5%; P < 0.05).

Conclusions: Our study indicated that beta-hydroxy-beta-methylbutyrate/arginine/glutamine supplementation was potentially effective in the prevention of radiation dermatitis in head and neck cancer patients.
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http://dx.doi.org/10.1093/jjco/hyu027DOI Listing
May 2014

Central-part laryngectomy is a useful and less invasive surgical procedure for resolution of intractable aspiration.

Eur Arch Otorhinolaryngol 2014 May 18;271(5):1149-55. Epub 2013 Oct 18.

Department of Otolaryngology & Head and Neck Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan,

A novel narrow-field laryngectomy procedure known as central-part laryngectomy (CPL) for less invasive laryngeal diversion in patients with intractable aspiration is introduced. We conducted retrospective case reviews of 15 patients who underwent CPL. In this procedure, an area of the glottis including the mid-part of the thyroid cartilage and cricoid cartilage is removed to separate the digestive tract from the air way. The lateral part of the thyroid cartilage, the entire hypopharyngeal mucosa and epiglottis are preserved. The superior laryngeal vessels and nerve are not invaded. All fifteen patients were relieved of aspiration without major complications. In good accordance with cutting of the cricopharyngeal muscles and removal of the cricoid cartilage, postoperative videofluoroscopy demonstrated smooth passages of barium. Ten of 12 patients who had hoped to resume oral food intake became able to do so after CPL and two others also achieved partial oral deglutition. CPL is a useful procedure for treatment of intractable aspiration and offers considerable advantages over other laryngotracheal diversion procedures from the view point of oral food intake.
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http://dx.doi.org/10.1007/s00405-013-2725-4DOI Listing
May 2014

Malignant melanoma of the head and neck: a multi-institutional retrospective analysis of cases in northern Japan.

Head Neck 2012 Nov 31;34(11):1537-41. Epub 2012 Mar 31.

Department of Otolaryngology, Head and Neck Surgery, Tohoku University School of Medicine, Sendai, 980-8574 Japan.

Background: Mucosal melanoma of the head and neck is rare and is associated with a poor prognoses because of locoregional failure and distant metastasis. The aim of our study was to review the characteristics of these patients in northern Japan and to analyze their outcomes.

Methods: The medical records of 94 patients who had been provided initial treatment in 12 institutes from 1998 to 2007 were reviewed.

Results: When the 5-year overall survival rates of patients were evaluated, we found that the survival rates of patients treated by chemotherapy were significantly lower than those of patients treated by surgery or radiation. The survival rates of the single-treatment modality, 2-modality, and ≥3-modality groups were 23.4%, 38.0%, and 33.6%, respectively.

Conclusion: Our results suggest that patients who underwent combined treatment had better prognoses. However, we found that chemotherapy had no additional survival benefits.
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http://dx.doi.org/10.1002/hed.21984DOI Listing
November 2012

Distinct features of second primary malignancies in head and neck cancer patients in Japan.

Tohoku J Exp Med 2011 09;225(1):5-12

Department of Otolaryngology-Head and Neck Surgery, Tohoku University Hospital, Sendai, Japan.

Second primary malignancies (SPMs) are one of the most critical problems in treating head and neck cancer patients. Our hospital had 742 patients with a diagnosis of malignant head and neck tumors during the five-year period from 2002 to 2006. In this study, we analyzed 360 of those patients who were assumed to have risk factors such as alcohol and tobacco use: 106 oral, 120 laryngeal, 50 oropharyngeal and 84 hypopharyngeal cancer patients. Synchronous SPMs are defined as second cancers diagnosed at the same time or within 6 months of the diagnosis of the index head and neck cancers. There were 4 (3.8%) and 11 (10.4%) oral cancer patients, 11 (8.3%) and 8 (5.8%) laryngeal cancer patients, 7 (14.0%) and 4 (8.0%) oropharyngeal cancer patients, and 30 (28.6%) and 7 (8.3%) hypopharyngeal cancer patients with synchronous and metachronous SPMs, respectively. The number of metachronous patients with synchronous SPMs tended to increase during this time period. The frequencies of SPMs in oropharyngeal and hypopharyngeal cancer patients are similar to those in oral and laryngeal cancer patients. Notably, the most frequent SPMs are upper gastrointestinal tract cancers in Japan, compared to lung cancers in Europe. The five-year overall survival rate of patients with synchronous SPMs was significantly poorer than that of patients without any other tumor except for the index cancer, according to the Kaplan-Meier analysis. In conclusion, searching for SPMs in the upper gastrointestinal tract is a critical issue in head and neck cancer patients in Japan.
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http://dx.doi.org/10.1620/tjem.225.5DOI Listing
September 2011

[Two cases of radiation-induced sarcoma after radiation therapy in nasopharyngeal carcinoma].

Nihon Jibiinkoka Gakkai Kaiho 2008 Jul;111(7):533-6

Department of Otolaryngology-Head & Neck Surgery, Tohoku University Hospital, Sendai.

We report two cases of radiation-induced sarcoma after chemoradiation therapy in nasopharyngeal carcinoma. Case 1: A 40-year-old man developed a malignant peripheral nerve sheath tumor (MPNST) in the posterior floor of the nasal cavity 10 years after treatment for nasopharyngeal cancer. Case 2: A 64 year-old man developed a malignant fibrous histiocytoma (MFH) of the lower gum 10 years after treatment of nasopharyngeal cancer. Despite radical surgery, the man with MPNST had a recurrent tumor and died of the disease.
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http://dx.doi.org/10.3950/jibiinkoka.111.533DOI Listing
July 2008

Management of the patients with hypopharyngeal cancer: eight-year experience of Miyagi Cancer Center in Japan.

Tohoku J Exp Med 2005 Jan;205(1):65-77

Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Japan.

The aim of this study is to evaluate the results of treatment for hypopharyngeal cancer and indicate the future prospect of the treatment. Seventy-four patients with squamous cell carcinoma of the hypopharynx admitted to Miyagi Cancer Center from 1993 through 2000 are reviewed. Sixty-four patients received radical treatment, and 10 patients received palliative treatment or no treatment. The cancer was advanced (stages III and IV) in 82% of all the patients. The overall 5-year survival rate of all the patients was 38%. The overall 5-year survival rate of 64 patients received radical treatment was 43%. The ten patients who received palliative treatment or no treatment died of cancer within 16 months. Fifty-two out of the 74 patients underwent neck dissection for the neck lymph node involvement; forty of the 52 patients underwent ipsilateral neck dissection and 12 underwent bilateral neck dissection. Four out of the 40 patients, who underwent ipsilateral neck dissection alone, developed late contralateral regional recurrence but were successfully treated by contralateral neck dissection at the time of recurrence. Twenty-three out of 74 patients had multiple primary cancers synchronously or metachronously (31%). Cause of the death of six patients out of 74 patients was confirmed to be primary cancers other than hypopharyngeal cancer, as judged by physicians in other department or other hospitals. Most of the patients died due to distant metastasis from hypopharyngeal cancer or other primary cancers. We therefore conclude that contralateral elective neck dissection which is frequently chosen for the treatment of hypopharyngeal cancer surgery is unnecessary. Even if locoregional control is accomplished, distant metastasis or multiple primary cancers emerge and make prognosis poor. To improve the prognosis, we should develop some strategy against hypopharyngeal cancer for each patient. New strategies including chemoprevention and surgery against distant metasistasis are necessary.
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http://dx.doi.org/10.1620/tjem.205.65DOI Listing
January 2005
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