Publications by authors named "Katsuji Yamauchi"

8 Publications

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Laparoscopic retroperitoneal splenopexy for wandering spleen: A novel technique using a three-incision retroperitoneal pouch.

Asian J Endosc Surg 2020 Nov 18. Epub 2020 Nov 18.

Department of Pediatric Surgery, Kindai University Nara Hospital, Ikoma, Japan.

Introduction: Wandering spleen is a rare condition for which splenopexy is indicated to prevent splenic torsion. We present a novel laparoscopic splenopexy technique for wandering spleen based on creation of a three-incision retroperitoneal pouch.

Materials And Surgical Technique: A 12-year-old male patient with abdominal distention and vomiting was transferred to our institution. Contrast-enhanced CT revealed a swollen wandering spleen with associated gastric volvulus, and the patient underwent laparoscopic surgery. A 5-mm camera port was inserted through an umbilical incision with two additional ports, one in the right upper abdomen and one in the left flank. Normal saline was injected into the retroperitoneal space from the left flank with a 23-G needle to create a retroperitoneal pouch. Three ventrodorsal peritoneal incisions were created at the same site in the peritoneum. The swollen spleen was inserted into the retroperitoneal pouch from the central incision, and the upper and lower poles of the spleen were exposed to the abdominal cavity from the cranial and caudal incisions to prevent splenic torsion. Finally, anterior gastropexy was performed. The postoperative period was uneventful. The patient was discharged on postoperative day 11 without complaints. As of 10 months after surgery, the patient had no recurrences of splenic torsion or gastric volvulus.

Discussion: In the present method, the retroperitoneal pouch was created without difficulty by injection of normal saline. Even in a patient with a swollen spleen, this novel method could prevent splenic torsion without using artificial materials or extensively dissecting the retroperitoneal space.
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http://dx.doi.org/10.1111/ases.12894DOI Listing
November 2020

A novel approach to neonatal abdominal surgery via a circular incision around the umbilical cord.

Pediatr Surg Int 2016 Oct 2;32(10):1009-11. Epub 2016 Aug 2.

Department of Pediatric Surgery, Nara Hospital, Kindai University Faculty of Medicine, 1248-1, Otsuda-cho, Ikoma, Nara, 630-0293, Japan.

We present a new, scarless, circular incisional approach around the umbilical cord for neonates with intestinal atresia. This novel approach achieves truly woundless surgery. It is simple, safe, and can be used for an intestinal surgical treatment in neonates.
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http://dx.doi.org/10.1007/s00383-016-3945-7DOI Listing
October 2016

Laparoscopic repair of sliding inguinal hernia in female children.

Pediatr Surg Int 2016 Sep 28;32(9):895-9. Epub 2016 Jul 28.

Department of Pediatric Surgery, Kindai University Nara Hospital, 1248-1, Otoda-cho, Ikoma-shi, Nara, 630-0293, Japan.

Purpose: To evaluate the safety and feasibility of laparoscopic repair of sliding inguinal hernia in female children.

Methods: Laparoscopic percutaneous extraperitoneal closure (LPEC) was performed in 482 female inguinal hernia children between 2006 and 2015. Fourteen of these patients were associated with sliding inguinal hernia, and these 14 patients were enrolled and reviewed retrospectively.

Results: The mean age and the body weight at the operation was 9.6 months and 7.8 kg. Seven patients required the reduction of the ovary under general anesthesia. Laparoscopy, however, revealed that five patients had severe sliding of fallopian tube into the inguinal canal. One of these five patients received a simple LPEC, but developed the recurrence due to the low ligation of the hernia sac, and needed the second hernia repair under inguinal approach. Other four patients with fallopian tube sliding required the dissection of the fallopian tube and peritoneal repair, or the conversion to inguinal approach; therefore they had longer surgical time compared to those without fallopian tube sliding.

Conclusion: LPEC is safe and feasible for the sliding inguinal hernia repair except the cases with fallopian tube sliding. Patients with fallopian tube sliding required additional procedure or conversion to inguinal approach.
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http://dx.doi.org/10.1007/s00383-016-3935-9DOI Listing
September 2016

Anterior mediastinal tracheostomy with a median mandibular splitting approach in a Larsen syndrome patient with posterior cervical arthrodesis.

Pediatr Surg Int 2015 Oct 19;31(10):1001-4. Epub 2015 Aug 19.

Department of Plastic Surgery, Nara Hospital, Kindai University Faculty of Medicine, 1248-1 Otuda-Chou, Ikoma, Nara, 630-0293, Japan.

Larsen syndrome is a rare congenital connective tissue disorder characterized by multiple joint dislocations. A novel anterior mediastinal tracheostomy with a median mandibular splitting approach is presented for the treatment of airway obstruction in a Larsen syndrome patient with posterior cervical arthrodesis.
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http://dx.doi.org/10.1007/s00383-015-3783-zDOI Listing
October 2015

Acquired cryptorchidism in a boy with disorder of sex development.

Clin Pediatr Endocrinol 2012 Jan 8;21(1):1-3. Epub 2012 Feb 8.

Department of Urology, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan.

Recently, it has been reported that boys with severe hypospadias are at increased risk for acquired cryptorchidism. The reports suggested that prenatal and postnatal androgen disruption might be correlated with this condition. We experienced a case of ovotesticular disorder of sex development (DSD), which was ultimately diagnosed at surgery for acquired cryptorchidism. Ascent of the scrotal contents of the left side was detected in a 7-yr-old boy with the 46, XX karyotype, who had a history of perineal hypospadias repair. Intraoperative findings revealed the left gonad consisted of 2 segments, and this was histologically diagnosed as ovotestis by biopsy specimen. Resection of the ovarian segment was performed simultaneously. Exploration of the contralateral gonad showed the same findings. This is the first report of acquired cryptorchidism observed in a patient with DSD presenting with ambiguous genitalia.
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http://dx.doi.org/10.1297/cpe.21.1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3687647PMC
January 2012

Single-site laparoscopic herniorrhaphy using needle instruments for inguinal hernias in children: a novel technique.

Surg Today 2012 Jan 10;42(1):100-3. Epub 2011 Nov 10.

Department of Pediatric Surgery, Nara Hospital, Kinki University School of Medicine, 1248-1 Otsuda-cho, Ikoma, Nara 630-0293, Japan.

We describe our new technique for laparoscopic herniorrhaphy with subumbilical single-site access to treat inguinal hernias in children. First, we inserted a transparent 3-mm trocar and a 2-mm minitrocar at the umbilicus. We then inserted a 3-mm 45° camera through the 3-mm trocar and needle-grasping forceps through the 2-mm trocar. We closed the hernia defect by using a 19-gauge hooked injection needle with a nonabsorbable suture. We treated 11 consecutive female children with inguinal hernia using this operation. The mean operating time was 26.7 min (range 21-36 min) and the procedure was technically successful, without the need for additional trocars, in all 11 patients. There were no intraoperative complications and all the patients were discharged on the same day after the surgery. Single-site laparoscopic herniorrhaphy using needle instruments is feasible and seems to be safe. Further studies are required to determine whether this approach would benefit patient compared with standard laparoscopic herniorrhaphy.
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http://dx.doi.org/10.1007/s00595-011-0020-9DOI Listing
January 2012

Effect of electrolyzed strong acid water on peritoneal irrigation of experimental perforated peritonitis.

Surg Today 2009 27;39(6):514-7. Epub 2009 May 27.

Department of Pediatric Surgery, Osaka Medical Center and Research Institute for Maternal and Child Health, 840 Murodo-cho, Izumi, Osaka, 594-1101, Japan.

Purpose: Electrolyzed strong acid water (ESAW) is generated by the electrolysis of a weak sodium chloride solution. Although ESAW is known to have a strong bactericidal activity and to be harmless to the living body, its effectiveness and safety in the treatment of perforated peritonitis has not been well established.

Methods: Male Wistar rats were used for the study. Three hours after cecal ligation and puncture, the cecum was resected and the peritoneal cavity was irrigated with 50 ml of saline (Group S, n=12) or ESAW (Group E, n=14). The 5-day survival rate was compared between the two groups. In another pair of animals (n=10 each), bacteria in the ascitic fluid were counted at 6 and 18 h after irrigation.

Results: No adverse effects of ESAW were observed in the experimental group. The 5-day survival rate was 25% (3/12) and 85.7% (12/14) in Groups S and E, respectively (P < 0.01). The bacterial count at 18 h after the irrigation in Groups S and E was (5.0 +/- 2.5) x 10(5)/ml and (2.2 +/- 2.0) x 10(4)/ml, respectively (P < 0.0001).

Conclusion: Peritoneal lavage with ESAW had no adverse effect, and achieved more effective decontamination than saline for perforated peritonitis. Therefore, the results of this study are considered to warrant and support the clinical application of ESAW.
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http://dx.doi.org/10.1007/s00595-008-3914-4DOI Listing
September 2009

Laparoscopic treatment of gallbladder volvulus: a pediatric case report and literature review.

J Laparoendosc Adv Surg Tech A 2008 Apr;18(2):330-4

Department of Pediatric Surgery, Nara Hospital, Kinki University School of Medicine, Nara, Japan.

Volvulus of the gallbladder has been reported mostly in elderly women and is rarely reported in children. In this paper, we report a recent case of successful detorsion and removal of the gallbladder via minimal access surgery, which was diagnosed as gallbladder volvulus preoperatively by means of magnetic resonance imaging (MRI). An 11-year-old boy presented with an acute abdomen, and acute cholecystitis was suspected, based on the findings of ultrasound and computed tomography. However, a diagnosis of gallbladder volvulus was established through MRI, and emergency laparoscopic surgery was subsequently performed. Laparoscopy revealed a hemorrhagic, gangrenous gallbladder that floated anteriorly. The gallbladder was rotated twice around its pedicle in a counterclockwise direction. It was untwisted through laparoscopy, and a cholecystectomy was performed without difficulty. To achieve an early, prompt preoperative diagnosis, MRI could be an effective alternative to conventional imaging modalities. The advent of laparoscopic detorsion and cholecystectomy as a treatment for gallbladder volvulus allows less invasive treatment, a shorter hospital stay, and better cosmesis, which are highly desirable in children.
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http://dx.doi.org/10.1089/lap.2007.0057DOI Listing
April 2008