59,850 results match your criteria multicenter retrospective


High Anti-Infliximab Antibody Titers Do Not Impact Response to Subsequent Adalimumab Treatment in Inflammatory Bowel Diseases.

Dig Dis Sci 2021 Jun 12. Epub 2021 Jun 12.

Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, 165 Cambridge Street, 9th Floor, Boston, MA, 02114, USA.

Background: While the role of anti-drug antibodies in mediating loss of response to infliximab (IFX) is known, it is possible that there are different clinical implications for high compared to low titers of antibodies to infliximab (ATI). The impact of ATI titer on efficacy of subsequent anti-TNF treatment has not been established previously.

Methods: This is a multicenter retrospective cohort study of individuals with IBD who discontinued infliximab due to development of ATI and were subsequently switched to adalimumab therapy. Read More

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Prognostic Impact of Different Gleason Patterns on Biopsy Within Grade Group 4 Prostate Cancer.

Ann Surg Oncol 2021 Jun 11. Epub 2021 Jun 11.

Department of Urology, Medical University of Vienna, Vienna, Austria.

Background: Grade group (GG) 4 prostate cancer (PC) is considered a single entity; however, there are questions regarding prognostic heterogeneity. This study assessed the prognostic differences among various Gleason scores (GSs) classified as GG 4 PC on biopsy before radical prostatectomy (RP).

Methods: We conducted a multicenter retrospective study, and a total of 1791 patients (GS 3 + 5: 190; GS 4 + 4: 1557; and GS 5 + 3: 44) with biopsy GG 4 were included for analysis. Read More

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Does general comorbidity impact the postoperative outcomes after surgery for large and giant petroclival meningiomas?

Neurosurg Rev 2021 Jun 12. Epub 2021 Jun 12.

Service de Neurochirurgie, CHU Nord, APHM-AMU, Marseille, France.

We assessed the role of the general condition of the patient in addition to usual anatomical reasoning to improve the prediction of personalized surgical risk for patients harboring a large and giant petroclival meningiomas. Single-center, retrospective observational study including adult patients surgically treated for a large and giant petroclival meningioma between January 2002 and October 2019 in a French tertiary neurosurgical skull-base center by one Neurosurgeon. Inclusion criteria were as follows: (1) histopathologically proven meningioma; (2) larger than 3 cm in diameter; (3) located within the upper two-thirds of the clivus, the inferior petrosal sinus, or the petrous apex around the trigeminal incisura, medial to the trigeminal nerve. Read More

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A Multicenter Preliminary Study of Cangrelor following Thrombectomy Failure for Refractory Proximal Intracranial Occlusions.

AJNR Am J Neuroradiol 2021 Jun 11. Epub 2021 Jun 11.

Neurology (I.S.), Bordeaux University Hospital, Bordeaux, France.

Background And Purpose: Rescue endovascular and pharmacologic approaches are increasingly being adopted after recanalization failure of acute large-vessel occlusion strokes with mechanical thrombectomy, with encouraging results. The safety and efficacy of glycoprotein IIb/IIIa inhibitors in ischemic stroke have been investigated, though cangrelor, a recent intravenous P2Y12-receptor inhibitor with a rapid onset/offset of action and a short half-life, may be a valuable option. We compared the safety and efficacy of cangrelor with those of glycoprotein IIb/IIIa inhibitors for refractory occlusions. Read More

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Early period results of radiofrequency ablation and cyanoacrylate embolization for great saphenous vein insufficiency.

Vascular 2021 Jun 11:17085381211026154. Epub 2021 Jun 11.

Department of Cardiovascular Surgery, 147003Bursa Yüksek İhtisas Training and Research Hospital, Health Science University, Bursa, Turkey.

Objective: To evaluate the 6 months efficacy and safety of cyanoacrylate closure for the treatment of incompetent great saphenous veins (GSVs) in comparison with radiofrequency ablation (RFA).

Methods: In this multicenter, retrospective, clinical trial, 398 symptomatic subjects with incompetent GSVs were assigned to either cyanoacrylate closure or RFA. The primary endpoint, complete closure of the target GSV, was determined using duplex ultrasound examination starting from one-, three-, and six-month visits. Read More

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Line-field confocal optical coherence tomography for actinic keratosis and squamous cell carcinoma: a descriptive study.

Clin Exp Dermatol 2021 Jun 11. Epub 2021 Jun 11.

Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium.

Background: Early and accurate diagnosis of cutaneous squamous cell carcinoma (SCC) and actinic keratosis (AK) is fundamental to reduce their morbidity and to select the correct treatment. Line-field confocal optical coherence tomography (LC-OCT) is a new imaging device that can characterize healthy skin and basal cell carcinoma, but no large studies are available on keratinocyte cell tumours.

Objectives: To identify and describe LC-OCT criteria associated with SCC and AK and to compare LC-OCT findings in these tumours. Read More

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Impact of the preoperative modified glasgow prognostic score on disease outcome after radical cystectomy for urothelial carcinoma of the bladder.

Minerva Urol Nephrol 2021 Jun 11. Epub 2021 Jun 11.

Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria -

Background: To investigate the predictive and prognostic value of the preoperative modified Glasgow Prognostic Score (mGPS) in patients with urothelial carcinoma of the bladder (UCB) treated with radical cystectomy (RC).

Methods: We conducted a retrospective analysis of an established multicenter database consisting of 4,335 patients who were treated with RC +/- adjuvant chemotherapy for UCB between 1979 and 2012. The mGPS of each patient was calculated on the basis of preoperative serum C-reactive protein and albumin. Read More

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Outcomes of Surgical Treatment for One Hundred Thirty-Eight Patients With Severe Sagittal Deformity at a Minimum 2-Year Follow-up: A Case Series.

Oper Neurosurg (Hagerstown) 2021 Jun 10. Epub 2021 Jun 10.

Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA.

Background: Operative treatment of adult spinal deformity (ASD) can be very challenging with high complication rates. It is well established that patients benefit from such treatment; however, the surgical outcomes for patients with severe sagittal deformity have not been reported.

Objective: To report the outcomes of patients undergoing surgical correction for severe sagittal deformity. Read More

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Hybrid AI-assistive diagnostic model permits rapid TBS classification of cervical liquid-based thin-layer cell smears.

Nat Commun 2021 06 10;12(1):3541. Epub 2021 Jun 10.

Department of Pathology, Guangdong Provincial Women's and Children's Dispensary, Shenzhen, Guangdong Province, PR China.

Technical advancements significantly improve earlier diagnosis of cervical cancer, but accurate diagnosis is still difficult due to various factors. We develop an artificial intelligence assistive diagnostic solution, AIATBS, to improve cervical liquid-based thin-layer cell smear diagnosis according to clinical TBS criteria. We train AIATBS with >81,000 retrospective samples. Read More

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Low preoperative skeletal muscle density is predictive for negative postoperative outcomes in older women with ovarian cancer.

Gynecol Oncol 2021 Jun 7. Epub 2021 Jun 7.

Leiden University Medical Center, Leiden University, Department of Medical Oncology, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands.

Objective: To determine the predictive value of lumbar skeletal muscle mass and density for postoperative outcomes in older women with advanced stage ovarian cancer.

Methods: A multicenter, retrospective cohort study was performed in women ≥ 70 years old receiving surgery for primary, advanced stage ovarian cancer. Skeletal muscle mass and density were assessed in axial CT slices on level L3. Read More

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Characteristics and outcomes of patients with COVID-19 supported by extracorporeal membrane oxygenation: A retrospective multicenter study.

J Thorac Cardiovasc Surg 2021 May 18. Epub 2021 May 18.

Department of Cardiothoracic and Vascular Surgery, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY.

Objective: To determine characteristics, outcomes, and clinical factors associated with death in patients with COVID-19 requiring extracorporeal membrane oxygenation (ECMO) support.

Methods: A multicenter, retrospective cohort study was conducted. The cohort consisted of adult patients (18 years of age and older) requiring ECMO in the period from March 1, 2020, to September 30, 2020. Read More

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Economic burden of age-related macular degeneration in routine clinical practice: the RAMDEBURS study.

Int Ophthalmol 2021 Jun 10. Epub 2021 Jun 10.

University and Polytechnic Hospital of La Fé, Valencia, Spain.

Purpose: To describe and evaluate the main direct health costs, in routine clinical practice, of age-related macular degeneration (AMD) patients, from hospital perspective, in Spain.

Methods: Retrospective, multicenter, and observational study conducted on five third-level Spanish hospitals, between December 2018 and December 2019. The study included patients who were diagnosed of AMD before December 2018. Read More

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Cognitive and behavioral associated changes in manifest Huntington disease: A retrospective cross-sectional study.

Brain Behav 2021 Jun 10:e02151. Epub 2021 Jun 10.

Huntington and Rare Diseases Unit, Fondazione IRCCS Casa Sollievo della Sofferenza Hospital, San Giovanni Rotondo, Italy.

Introduction: Behavioral and cognitive changes can be observed across all Huntington disease (HD) stages. Our multicenter and retrospective study investigated the association between cognitive and behavioral scale scores in manifest HD, at three different yearly timepoints.

Methods: We analyzed cognitive and behavioral domains by the Unified Huntington's Disease Rating Scale (UHDRS) and by the Problem Behaviors Assessment Short Form (PBA-s), at three different yearly times of life (t0 or baseline, t1 after one year, t2 after two years), in 97 patients with manifest HD (mean age 48. Read More

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A Closer Look at Delayed Primary Cleft Surgery and Unrepaired Cleft Lip and/or Palate in 5 UK Cleft Centers.

Cleft Palate Craniofac J 2021 Jun 10:10556656211021700. Epub 2021 Jun 10.

5983Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, Northern Ireland, United Kingdom.

Background: There may be many reasons for delays to primary cleft surgery. Our aim was to investigate the age of children undergoing primary cleft lip or primary cleft palate repair in 5 cleft centers within the United Kingdom. Identify the reasons for delayed primary cleft lip repair (beyond 6 months) and delayed primary palate repair (beyond 13 months). Read More

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Kidney Biopsy in Patients With Monoclonal Gammopathy: A Multicenter Retrospective Cohort Study.

Front Med (Lausanne) 2021 24;8:687149. Epub 2021 May 24.

State Key Laboratory of Organ Failure Research, National Clinical Research Center for Kidney Disease, Guangdong Provincial Clinical Research Center for Kidney Disease, Nanfang Hospital, Southern Medical University, Guangzhou, China.

To analyze the clinical characteristics and renal pathological manifestations of patients with monoclonal gammopathy (MG) and kidney injury. This was a multicenter retrospective cohort study conducted at four tertiary hospitals in China. The study population comprised patients with MG admitted from January 1 2013 to December 31 2020. Read More

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Early Exanthema Upon Vemurafenib Plus Cobimetinib Is Associated With a Favorable Treatment Outcome in Metastatic Melanoma: A Retrospective Multicenter DeCOG Study.

Front Oncol 2021 24;11:672172. Epub 2021 May 24.

Department of Dermatology, University Hospital Essen, German Cancer Consortium (DKTK), Essen, Germany.

Background: The combination of BRAF and MEK inhibitors has become standard of care in the treatment of metastatic BRAF V600-mutated melanoma. Clinical factors for an early prediction of tumor response are rare. The present study investigated the association between the development of an early exanthema induced by vemurafenib or vemurafenib plus cobimetinib and therapy outcome. Read More

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Prevalence and clinical impact of tumor BRCA1 and BRCA2 mutations in patients presenting with localized or metastatic hormone-sensitive prostate cancer.

Prostate Cancer Prostatic Dis 2021 Jun 9. Epub 2021 Jun 9.

Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.

Background: The appropriate management of localized or metastatic hormone-sensitive prostate cancer (HSPC) patients harboring tumor BRCA mutations (tBRCAm) is not well-characterized. We sought to evaluate the prevalence and clinical outcomes of patients with tBRCAm and localized or de novo metastatic HSPC.

Methods: We performed a multicenter, international, retrospective cohort study of localized (cohort 1) and de novo metastatic (cohort 2) HSPC patients who underwent tumor BRCA1 and BRCA2 sequencing from 2013 to 2019. Read More

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Impact of surgical site infection on patients' outcome after fixation of tibial plateau fractures: a retrospective multicenter study.

BMC Musculoskelet Disord 2021 Jun 9;22(1):531. Epub 2021 Jun 9.

Department of Orthopedics, Trauma and Plastic Surgery, University of Leipzig, Liebigstraße 20, 04103, Leipzig, Germany.

Background: Surgical site infection (SSI) occurs in 3-10 % of patients with surgically treated tibial plateau fractures. This study aimed to evaluate the impact of SSI on patients' outcome after fixation of tibial plateau fractures.

Methods: We conducted a retrospective multicenter study in seven participating level I trauma centers between January 2005 and December 2014. Read More

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Clinicopathological Characteristics and Recurrence-Free Survival of Rare Variants of Papillary Thyroid Carcinomas in Korea: A Retrospective Study.

Endocrinol Metab (Seoul) 2021 Jun 10. Epub 2021 Jun 10.

Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.

Background: We aimed to evaluate the clinicopathological features and biological behaviors of Korean thyroid cancer patients with rare variants of papillary thyroid carcinoma (PTC) to address the ambiguity regarding the prognostic consequences of these variants.

Methods: We retrospectively reviewed the medical records of 5,496 patients who underwent thyroid surgery for PTC, between January and December 2012, in nine tertiary hospitals. Rare PTC variants included tall cell (TCV), columnar cell (CCV), diffuse sclerosing (DSV), cribriform-morular (CMV), solid (SV), hobnail, and Warthin-like variants. Read More

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Low-value injury admissions in an integrated Canadian trauma system: a multicenter cohort study.

Int J Clin Pract 2021 Jun 9:e14473. Epub 2021 Jun 9.

Department of Social and Preventive Medicine, Université Laval, Québec, QC, Canada.

Background: Injury represents 260,000 hospitalisations and $27 billion in healthcare costs each year in Canada. Evidence suggests that there is significant variation in the prevalence of hospital admissions among ED presentations between countries and providers but we lack data specific to injury admissions. We aimed to estimate the prevalence of potentially low-value injury admissions following injury in a Canadian provincial trauma system, identify diagnostic groups contributing most to low-value admissions and assess inter-hospital variation. Read More

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Clinical course of asymptomatic malignant pleural effusion in non-small cell lung cancer patients: A multicenter retrospective study.

Medicine (Baltimore) 2021 May;100(19):e25748

Department of Internal Medicine.

Abstract: The British Thoracic Society guidelines recommend observation for patients with asymptomatic malignant pleural effusion (MPE). However, asymptomatic MPE can become symptomatic. This study examined the clinical course of asymptomatic MPE in patients with non-small cell lung cancer (NSCLC), including the incidence and timing of symptom development of asymptomatic MPE and the associated factors. Read More

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A Novel Multiparameter Scoring Model for Noninvasive Early Prediction of Ischemic Colitis: A Multicenter, Retrospective, and Real-World Study.

Clin Transl Gastroenterol 2021 Jun 9;12(6):e00370. Epub 2021 Jun 9.

Department of Gastroenterology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.

Introduction: Ischemic colitis (IC) is a common gastrointestinal ischemic disease caused by hypoperfusion or reperfusion injury. However, there are few studies on risk factors associated with poor prognoses of the disease. This study aimed to determine the predictors of poor prognoses in patients with IC and establish a prognostic scoring method with good internal and external validity for identifying severe cases in an early stage. Read More

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Extremely high mortality in COVID-19 hemodialyzed patients in before anty-SARS-CoV-2 vaccination era. The first large database from Poland.

Pol Arch Intern Med 2021 Jun 9. Epub 2021 Jun 9.

Introduction: Preliminary reports suggest a high incidence and mortality with SARS-CoV-2 infection in patients receiving kidney replacement therapy.

Objectives: To describe the incidence and outcomes of COVID-19 in hemodialyzed (HD) patients.

Patients And Methods: We conducted a cohort, retrospective, multicenter study on incidence and mortality of COVID-19 in HD patients compared to the adult general population from the beginning of the pandemic until the commencement of vaccination against SARS-CoV-2 infection. Read More

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Treatment and outcome patterns of patients with Waldenström's macroglobulinemia: a large, multicenter retrospective review in China.

Leuk Lymphoma 2021 Jun 9:1-8. Epub 2021 Jun 9.

Department of Hematology, Hubei, China.

In this study, we aimed to investigate treatment options and the prognosis of patients with WM in China. This retrospective study included 1141 patients diagnosed with symptomatic WM between January 2003 and December 2019 at 35 tertiary hospitals in 22 provinces of China. Fifty-four patients (7. Read More

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Dental implant placement with inferior alveolar nerve repositioning in severely resorbed mandibles: a retrospective multicenter study of implant success and survival rates, and lower lip sensory disturbances.

Int J Implant Dent 2021 Jun 9;7(1):44. Epub 2021 Jun 9.

S'OS Orthognathic Surgery, Vytenio 22-201, Vilnius, Lithuania.

Background: The purpose of this study was to analyze medium-to-long-term implant success and survival rates, and lower lip sensory disturbance after placement of dental implants with simultaneous inferior alveolar nerve (IAN) repositioning.

Methods: Fifteen patients (3 men, 12 women) treated in two centers were included in this retrospective study. The ages of the participants ranged from 19 to 68. Read More

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A novel HBsAg-based model for predicting significant liver fibrosis among Chinese patients with immune-tolerant phase chronic hepatitis B: a multicenter retrospective study.

Therap Adv Gastroenterol 2021 29;14:17562848211010675. Epub 2021 May 29.

Department of Hepatology, Hepatology Research Institute, The First Affiliated Hospital, Fujian Medical University, No. 20 Chazhong Road, Taijiang District, Fuzhou, Fujian 350005, China.

Background: Hepatitis B e antigen (HBeAg)-positive chronic hepatitis B (CHB) in the immune-tolerant (IT) phase is significantly associated with high risk for hepatocellular carcinoma, suggesting requirement for antiviral therapy, particularly for those with histological liver injury. This study aimed to establish a non-invasive panel to assess significant liver fibrosis in IT chronic hepatitis B.

Patients And Methods: One hundred and thirteen IT-phase CHB patients were retrospectively recruited and divided into two histopathological groups according to their histological profiles: necroinflammatory score <4 (N <4)/fibrosis score ⩽1 (F0-1), and necroinflammatory score ⩾4 (N ⩾4)/fibrosis score ⩾2 (F2-4). Read More

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Survival of Patients with Lung Cancer in the Setting of Liver Cirrhosis: A Multicenter Propensity Score Matching Study.

Cancer Manag Res 2021 1;13:4373-4381. Epub 2021 Jun 1.

Department of Radiation Oncology, Chiayi Chang Gung Memorial Hospital, Puzi, Chiayi County, Taiwan.

Purpose: The survival outcome of lung cancer patients with coexisting liver cirrhosis has thus far received limited attention in the literature. In this study, we evaluated whether liver cirrhosis is an independent risk factor for the survival of patients with lung cancer.

Materials And Methods: We conducted a retrospective, multicenter, propensity-matched study of lung cancer patients with and without liver cirrhosis. Read More

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Multicenter Retrospective Review of Safety and Efficacy of a Novel Minimally Invasive Lumbar Interspinous Fusion Device.

J Pain Res 2021 31;14:1525-1531. Epub 2021 May 31.

Center for Interventional Pain and Spine, Lancaster, PA, USA.

Introduction: Several treatment options exist for those with spinal stenosis, as well as degenerative changes. This series evaluates the use of an interspinous fixation (ISF) device as performed by interventional pain physicians.

Methods: This is a retrospective analysis identifying 32 patients with the diagnosis of lumbar degenerative disc disease with secondary diagnosis of lumbar spinal stenosis being treated with ISF with Aurora Spine Zip Interspinous Spacer. Read More

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Diagnostic performance of cerebroplacental and umbilicocerebral ratio in appropriate for gestational age and late growth restricted fetuses attempting vaginal delivery: a multicenter, retrospective study.

J Matern Fetal Neonatal Med 2021 Jun 8:1-7. Epub 2021 Jun 8.

Fetal Medicine Unit, Maternal and Child Health and Development Network, Department of Obstetrics and Gynecology, University Hospital 12 de Octubre, Complutense University of Madrid, Madrid, Spain.

Background: Cerebroplacental Doppler studies have been advocated to predict the risk of adverse perinatal outcome (APO) irrespective of fetal weight.

Objective: To report the diagnostic performance of cerebroplacental (CPR) and umbilicocerebral (UCR) ratios in predicting APO in appropriate for gestational age (AGA) fetuses and in those affected by late fetal growth restriction (FGR) attempting vaginal delivery.

Study Design: Multicenter, retrospective, nested case-control study between 1 January 2017 and January 2020 involving five referral centers in Italy and Spain. Read More

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[Consistency of peripheral whole blood and venous serum procalcitonin in children: a multicenter parallel controlled study].

Zhonghua Er Ke Za Zhi 2021 Jun;59(6):471-477

Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China.

To explore the consistency of peripheral whole blood and venous serum procalcitonin (PCT) levels, and the value of peripheral whole blood PCT in evaluating pediatric bacterial infection. This multicenter cross-sectional parallel control study was conducted in 11 children's hospital. All the 1 898 patients older than 28 days admitted to these hospitals from March 2018 to February 2019 had their peripheral whole blood and venous serum PCT detected simultaneously with unified equipment, reagent and method. Read More

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