ADENOCARCINOMA OF RECTUM
This elderly man presented having noticed "slime" in his stools. An abdominoperineal resection with permanent colostomy was performed.
The specimen consists of terminal rectum, anal canal and adjacent skin. The rectum has been opened to display the mucosal surface. A polypoid tumour 4.5 cm in greatest diameter arises from the mucosa 4 cm from the anal canal. Immediately above the main tumour is a polyp 1 cm in diameter. Occasional small nodular polyps are seen elsewhere in the mucosa. Histologically the large tumour is an adenocarcinoma of the rectum which is associated with rectal polyps.