A long adult intussusception secondary to transverse colon cancer

Figure 1 Abdominal X-ray showing distension of the ascending and right half transverse colon.

Figure 2 Barium enema examination showing the meniscus sign in the contrast material-filled distal sigmoid.

Figure 3 Abdominal computed tomography showing colocolic component of the intussusception (A, dashed arrow), thick-walled descending colon invaginated by transverse colon with mesenteric fat and vessels (A, solid arrow), and the typical “target sign” of colon within colon (B, solid arrow).

Figure 4 Abdominal computed tomography showing enlargement of the descending colon wall with the intussusception (arrow), suggesting the existence of a tumor in the head.

Figure 5 Gross examination of the resected specimen reveals a 25-cm colocolic intussusception. A: Perioperative view after mobilization of the left colon with forceps inside the intussusception invaginated transverse colon with great omentum; B: Operative specimen showing about 25 cm overlapped colon in the intussusceptions; C: The specimen contained a 3.0 cm × 3.0 cm × 2.5 cm protuberant tumor, thought to be the lead point of the intussusception (arrow).