Fig. 3From: Congestive ischemic colitis occurring after resection of left colon cancer: 4 case seriesa The IMV returns from the left transverse colon to the rectum. b When the SRA and SA are preserved and the IMV is dissected both at the inferior margin of the pancreas and at the root of SA (cases 2–4) level, venous blood from the anastomosis to the rectum mainly returns via the rectal vein. In case 1, the distal branches of IMV dissected at the root of LCA levelBack to article page