Figure 1
From: Melanosis coli in the elderly: a look beyond what can be seen
A. The pathological specimen of Case 1 patient. A stenosing adenocarcinoma was found at the sigmoid colon (black arrow). Melanosis coli was observed both in cranial and caudal segments of the colonic mucosa. B. Endoscopic appearance of the sigmoid colon of Case 2 patient. A severe mucosal inflammation was observed, without Melanosis coli. A suspect lesion was found (black arrow). Biopsies of the lesion documented a colonic adenocarcinoma.