Abstract
A 69-year-old man who had undergone a total gastrectomy for gastric cancer five years earlier presented himself for follow-up study although he had no symptoms. A hen's egg-sized tumor was found on abdominal CT, which was also palpable from outside. Intestinal radiography showed a multiple concentric ring sign characteristic of intussusception in the ileocecal region. Colonoscopy revealed a polypoid tomor, 5 cm in diameter, protruding from the opening of the ileum. Biopsy of the tumor showed well-differentiated adenocarcinoma.
On laparotomy, the intussusception in the ileocecal region and a tumor in the ileum were confirmed. Ileocecal resection with regional lymph node dissection was performed. Histological examination of the tumor revealed well-differentiated adenocarcinoma whose cells were toller than that of the previous gastric cancer and less atypical. The tumor was considered to be primary.
A review of the Japanese literature regarding adult intussusception due to malignancy disclosed that a case with double cancer is very rare.
