[A case of intussusception caused by low-grade appendiceal mucinous neoplasm with high serum levels of carcinoembryonic antigen resected by laparoscopy-assisted colectomy].

The patient was a 43-year-old woman who visited our hospital with a primary complaint of intermittent abdominal pain. Upper gastrointestinal endoscopy revealed mild gastritis. The patient was treated with oral drugs, and the course was followed. Subsequently, the abdominal pain aggravated, and computed tomography (CT) was performed, in which right colic intussusception with a 4 cm cystic mass in the advanced portion was noted. Reduction by enema was attempted on the same day; however, a residual tumorous lesion was present in the ileocecal region. The patient was diagnosed with a cecal submucosal tumor with intussusception, and therefore, laparoscopic surgery was performed. Intussusception of the entire appendix in the ascending colon was noted, for which laparoscopic ileocecal resection was performed. In the excised specimen, a cystic lesion comprising the appendix filled with mucus was present. The postoperative recovery was favorable, and the patient was discharged on the seventh postoperative day. The lesion was histopathologically diagnosed as low-grade appendiceal mucinous neoplasm.

[A case of locally advanced colorectal cancer with abscess responding to 5-fluorouracil, leucovorin, and oxaliplatin plus bevacizumab].

We encountered a case of colorectal cancer with pelvic abscess treated with radical surgery following colostomy and chemotherapy. The patient was a man in his 60s with advanced rectal cancer. The tumor had expanded locally and formed an abscess. We evaluated the primary lesion as unresectable, and performed chemotherapy with 5-fluorouracil, Leucovorin, and oxaliplatin( mFOLFOX) plus bevacizumab after colostomy. After 13 courses of chemotherapy, the tumor shrank remarkably. We performed a low anterior resection followed by adjuvant chemotherapy with capecitabine. The patient has had no recurrence for 18 months after surgery.

[Study on adjuvant MTX-5-FU intraperitoneal chemotherapy for advanced gastric cancer].

The intraperitoneal administration of anti-cancer drug is a rationale route to adjuvant chemotherapy. We applied adjuvant MTX-5-FU intraperitoneal chemotherapy for 60 advanced gastric cancer cases which had undergone gastrectomy (Stage II 18, Stage III A 19, Stage IIIB 13, and Stage IV 10 cases). A 5-year survival rate of Stage II, III A, IIIB and IV was 66.2%, 60.7%, 46.5% and 18.8%, respectively. Five-year survival rates of both Stage III A and IIIB on this study were likely to be higher than the rates of Stage III A and IIIB of other institutions. The 24 out of 42 cases with the serosal surface exposure of cancer demonstrated a cancer recurrence. Seventy percent (17 cases) of the 24 recurred cases developed a peritoneal recurrence, which means that the intraperitoneal chemotherapy did not touch a pattern of the recurrence of the gastric cancer with the serosal surface exposure.