The colon has been opened to show, in the lower part of the specimen, a 5cm carcinoma extending
around the whole circumference of the bowel. The lesion is ulcerated, and one imagines that it
would have produced a degree of obstruction. Above the tumour there are a number of polyps;
some of these are pedunculated, others sessile. The polyps may be adenomatous (pre-cancerous)
but, in the absence of histological examination, one could not be sure of this (histology would have
to reveal dysplasia). The redness of the polyps is in keeping with their vascularity.