[A Case of Perforated Low-Grade Appendiceal Mucinous Neoplasm Diagnosed During Appendectomy].

A 46-year-old female presented persistent right lower abdominal pain for 4 days. Computed tomography revealed an enlarged appendix with a surrounding low-attenuation mass. The patient was diagnosed with appendiceal abscess-forming appendicitis and initially treated with antibiotics. However, owing to the manifestation of nausea as a side effect, laparoscopic appendectomy was performed 3 days after the initial consultation. Intraoperative examination revealed mucinous material on the surface of the appendix and within the abdominal cavity, leading to the decision to perform an appendectomy with partial cecum resection and excision of the omentum with mucinous deposits. Pathological examination confirmed the diagnosis of a perforating low-grade appendiceal mucinous neoplasm and pseudomyxoma peritonei. The patient was subsequently referred to a specialized center for ongoing management, and at 9 months postoperatively, surveillance is being conducted. Low-grade appendiceal mucinous neoplasms can progress to pseudomyxoma peritonei through perforation; however, an optimal treatment approach has not yet been established. In particular, patients in advanced stages of the disease often require challenging management decisions. This case is reported along with a review of the literature to provide further guidance.

Indocyanine green fluorescence imaging-guided laparoscopy-assisted distal gastrectomy for early gastric cancer in a patient with situs inversus totalis: A case report with video.

Situs inversus totalis is a rare congenital anomaly. Most surgeons have seldom performed laparoscopy-assisted distal gastrectomy for situs inversus totalis. Inadequate knowledge regarding the anatomy of situs inversus totalis can result in increased intraoperative bleeding and prolonged operative time. A 74-year-old man was diagnosed with early gastric cancer with situs inversus totalis. We performed laparoscopy-assisted distal gastrectomy with D1+ lymphadenectomy and Billroth-I reconstruction by reversing the standard laparoscopy-assisted distal gastrectomy setup. Mirror images of the operative video of the standardized laparoscopy-assisted distal gastrectomy were created using video editing software. Lymphadenectomy was performed by indocyanine green fluorescence imaging of the lymphatic flow with operative time of 220 minutes and 100 mL intraoperative bleeding. The patient was discharged on postoperative day 10, without postoperative complications. Laparoscopy-assisted distal gastrectomy with indocyanine green navigation is safe and effective in patients with situs inversus totalis and is comparable with standard laparoscopy-assisted distal gastrectomy.

Laparoscopic transabdominal preperitoneal repair for recurrent obturator hernia initially treated by open mesh plug repair: A case report with video.

An 80-year-old woman presented to our emergency department with vomiting which had begun half a day prior to presentation. She had undergone open mesh plug repair for a right obturator hernia 1 year prior to presentation. Computed tomography detected recurrence of the right obturator hernia. Since intestinal viability was maintained, manual reduction of the incarcerated intestine was performed. The patient was admitted to our department to monitor delayed intestinal perforation. Laparoscopic transabdominal preperitoneal repair for obturator hernia was performed 5 days after admission. A self-fixating mesh was placed over the obturator hernia defect and femoral ring without tacking. The patient was discharged on postoperative day 6 without postoperative complications. At the 4-month follow-up, no signs of hernia recurrence or neuropathy were observed. Laparoscopic transabdominal preperitoneal repair for recurrent obturator hernia status post-open mesh plug repair by using self-fixating mesh is a safe and suitable procedure.