虫垂粘液嚢胞腺癌の1切除例

Abstract

We report a case of mucinous cystadenocarcinoma of the appendix. A 71-year-old women visited our hospital because fecal occult blood test was positive. Colonoscopy showed a round submucosal tumor-like lesion in the cecum. Abdominal CT scan showed a cystic tumor, 3×2 cm in diameter, adjacent to the cecum. A barium enema showed a round submucosal tumor-like lesion in the cecum, without demonstration of the appendix. The hematological tests showed an elevation of serum CEA level. We performed laparotomy with a suspicion of mucinous cystadenoma of the appendix. At the time of the operation, the appendix was swollen and filled with jelly-like mucus. We performed appendectomy because intraoperative pathological diagnosis by frozen section showed no malignancy. But, postoperative final pathological diagnosis revealed mucinous cystadenocarcinoma of the appendix. Ileocecal resection with D2 lymph node dissection was performed on the 17th days after the first operation. Mucinous cystadenocarcinoma of the appendix is comparatively rare and it is difficult to diagnose it preoperatively.