MKSAP: 65-year-old man is evaluated after a recent colonoscopy
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A 65-year-old man is evaluated after a recent colonoscopy, which disclosed a 2.5-cm pedunculated polyp in the sigmoid colon. The polyp was removed in its entirety in a single piece. Biopsy results showed a well-differentiated adenocarcinoma confined to the submucosa without evidence of lymphovascular involvement and a 1-mm margin. There is no family history of …