Abstract
A 74-year-old man, who had resection of an early gastric cancer at the age of 71, had a screening colonoscopy in February 1999. The colonoscopy revealed three polypoid lesions approximately 5mm in diameter in the cecum, ascending colon and rectum. The polypoid lesions had superficial erosion on the surface. The specimen of a polypoid lesion obtained by endoscopic mucosal resection revealed diffuse infiltration of signet ring cell carcinoma between the normal tubules. Therefore, colonic metastasis from the previous gastric cancer was suggested based on comparison with histologic findings of the resected gastric cancer. Colonic metastasis from gastric cancer usually presents as linitis plastica or an annular stricture and polypoid colonic metastasis from gastric cancer is very rare. Herein, the authors report a case of colonic metastasis presenting as polypoid lesions from a previous early gastric cancer.
