Distal rectosigmoid colon

Fig. 23.4. Distribution of resin labeled with 111 In after four successive daily (morning) administrations among a cohort of normal volunteers and patients with active colitis. AC, ascending colon DC, distal colon RS, rectosigmoid colon TC, transverse colon.

Fig. 1.34. Small left colon syndrome. Isosmolar water-soluble contrast enema in a newborn with low obstruction demonstrates a normal rectum and distal rectosigmoid and a relatively narrow proximal sigmoid and descending colon with a transition to a more dilated colon at the splenic flexure. In 1 week radiographic and clinical signs of obstruction resolved...

Fig. 1.32a-d. Total colonic agan-glionosis. a Plain radiograph of the abdomen demonstrates low obstruction. b,c Anteroposterior and lateral views during contrast enema show the shortened colon compared with the normal redundancy of the neonatal colon, with the flexures pulled down and a normal rectosigmoid index, d Intraoperative photograph shows dilated bowel loops with the transition zone at the distal ileum... 

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