-Case Reports-

Chronic Anisakiasis of the Ascending Colon Associated with Carcinoma

Sho Mineta¹, Kimiyoshi Shimanuki¹, Atsushi Sugiura¹, Yoshikazu Tsuchiya¹, Masahiro Kaneko¹, Yoshihiko Sugiyama², Koho Akimaru³ and Takashi Tajiri³

¹Department of Surgery, Aizu Central Hospital, Fukushima
²Department of Pathology, Aizu Central Hospital, Fukushima
³Surgery for Organ Function and Biological Regulation, Nippon Medical School Graduate School of Medicine

Chronic anisakiasis of the colon is rare and difficult to diagnose. We report a case of chronic anisakiasis associated with advanced colonic carcinoma. A 69-year-old man was admitted for abdominal pain, diarrhea, and urticaria. Right hemicolectomy was performed because of an obstruction of the ascending colon and a palpable tumor of the right lower abdomen. The lesion was thought to be located in the deeper layers of the ascending colon. Preoperative examinations failed to detect the coexistence of anisakiasis and carcinoma of the colon. The anisakis was identified morphologically in the intestinal wall of the resected specimen and by an elevated titer of an IgE antibody specific to the parasite. Seventy-five cases of colonic and rectal anisakiasis, including the present case, have been reported in Japan. This is the only reported case of anisakiasis to appear in association with colonic carcinoma.

J Nippon Med Sch 2006; 73: 169-174

Keywords
colon cancer, anisakiasis

Correspondence to
Sho Mineta, Department of Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan
minesho@nms.ac.jp

Received, January 27, 2006
Accepted, April 10, 2006