Fig. 5From: Transanal total mesorectal excision of giant villous tumor of the lower rectum with McKittrick–Wheelock syndrome: a case report of a novel surgical approachSurgical specimen and microscopic findings. a A villous tumor at gross examination. b Hematoxylin–eosin stain (× 20) revealed papillary tumor. c Differentiated adenocarcinoma in tubulovillous adenoma was detected in some lesion (× 200)Back to article page