A CASE OF AN EARLY CECAL CANCER DERIVED FROM A HYPERPLASTIC POLYP DURING ENDOSCOPIC FOLLOW-UP

Abstract

A 67 year-old woman had been followed for a Is type sessile hyperplastic polyp in the cecum from 1998. In 2000, biopsy of the polyp showed malignancy, and ileocecal resection was performed. Pathology of the resected specimen showed a well differentiated adenocarcinoma invading the submucosa(SM2).
Hyperplastic polyp of the colon is regarded as benign and non-neoplastic. However, recent observations have suggested that hyperplastic polyps of the right colon over 10mm in size have a malignant potential and therefore, should be carefully observed.