Fig. 2From: A rare case of sigmoid colon cancer in which the lower limbs received collateral blood flow from the inferior mesenteric artery owing to peripheral artery diseaseColonoscopic image of advanced sigmoid colon cancer. The tumor was categorized as type 2 and occupied four-fifths of the circumference. The scope did not pass through the cancer canal. Well-differentiated adenocarcinoma was evident from the biopsy specimenBack to article page