Rare Cause of a Colonic Laterally Spreading Tumor

摘要

A laterally spreading tumor was found during a screening colonoscopy in a 71-year-old woman. The lesion was flat and irregular shaped, 20 mm × 30 mm in size, and located 10 cm above the anal verge. There was no ulcer or erosion on the lesion. For histologic diagnosis and therapeutic purpose, a piecemeal endoscopic mucosal resection was performed. The endoscopic and histologic images are shown in .