Fig. 1From: Mixed small cell neuroendocrine carcinoma and squamous cell carcinoma covered by tubulovillous adenoma in the rectum: a case report and detailed molecular analysesRepresentative images of the first operation. a CT of the abdomen revealed thickening rectal wall and swollen lymph nodes around the rectum. b Colonoscopy showed a 2.0 cm × 3.0 cm irregular bulge in the rectum. c The tumor exhibited a tubulovillous adenoma with high-grade dysplasia (upper right) on the surface and a component of SCNEC limited to the submucosa. d SCNEC was positive for synaptophysinBack to article page