Two Cases of Primary Carcinoma of the Vermiform Appendix, Including One Case of Double Cancer of Vermiform Appendix and Caecum

Kuniyuki Katano, Hideo Sakamoto, Hiroki Kawasumi, Eiichi Yurugi, Juro Abe, Yoichi Kinugasa¹⁾, Makoto Tanida¹⁾

Department of Surgery, Saisei-kai Gotsu Hospital
Department of Surgery, Yonago Hakuai Hospital¹⁾

Primary carcinoma of the vermiform appendix is uncommon, and cases of double cancer of the vermiform appendix and other organs are rare. In this paper two cases of vermiform appendix, including one case of double cancer of vermiform appendix and caecum, are reported together with some discussion of the literature. Case 1 was a 70-year-old woman with the chief complaint of right lower abdominal pain. A small mass with a smooth and elastic hard surface was palpated in this region. Perityphilitic abscess caused by acute appendicitis was suspected. Appendectomy and partial resection of the greater omentum were performed. Histopathological examinations indicated a diagnosis of mucinous cystadenocarcinoma with invasion to the greater omentum, so right hemicolectomy was then performed. Case 2 was a 79-year-old woman who was admitted to the hospital to determine the cause of occult blood in stool. Barium enema studies and colon fiber studies indicated caecal cancer and caecal submucosal tumor. Right hemicolectomy was performed. The mass preoperatively diagnosed as caecal submucosal tumor was proved to be appendicular tumor. The histopathological diagnoses were moderately differentiated adenocarcinoma for the caecal tumor and well differentiated mucinous cystadenocarcinoma for the appendicular tumor.

Key words
carcinoma of the vermiform apendix, double cancer of the vermiform appendix and the caecum

Reprint requests
Kuniyuki Katano Department of Surgery, Saisei-kai Gotsu Hospital
1551 Gotsu Town, Gotsu City, 695 JAPAN

Accepted
April 13, 1994

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