Abstract
Sixty-two-year-old asymptomatic male was pointed out positive stool occult blood at medical screening test and admitted to our hospital for further evaluation of the colon. On endoscopic examination, IIa+IIc like lesion, 2.0X2.0 cm in diameter was demonstrated at the transverse colon and histology of biopsy spesimens taken from the lesion revealed well differented adenocarcinoma. Partial resection of the transeverse colon was performed on surgery. Components of adenoma, adenocarcinoma in adenoma and carcinoid were histologically shown in the IIa+IIc like lesion. Coexistence of adenoma, adenocarcinoma and carcinoid in a same lesion of the transverse colon is extremely rare on the literature.
