Abstract
Primary carcinoma of the appendix presents difficulty in diagnosis preoperatively, and is often found out in an advanced stage at laparotomy. We have recently experienced two cases of the primary carcinoma of vermiform appendix. Two hundred and six-two cases, including ours, of primary appendiceal carcinoma in the Japanese literature were also reviewed.
Case 1: An 84-year-old female was admitted to the hospital because of a right lower abdominal pain and high fever. Preoperative studies revealed three irregular elevated lesions in the cecum and ascending colon. Histological examination of the biopsy specimens revealed moderately differentiated tubular adenocarcinoma in the two lesions. At operation, a large tumor arising from the appendix infiltrated into the retroperitoneum with abscess formation. The cecum and the ascending colon were also involved with mucosal infiltration which were demonstrated preoperatively.
Case 2: A 69-year-old female was admitted to the hospital because of abdominal distension and vomiting. Fiberscopic examination revealed a thumb-tip sized tumor at the ileo-cecal valve. Histology of biopsy specimens was benign. At laparotomy, there found an appendiceal tumor with several disseminated foci, which caused ileal stenosis.
