A 47-year-old man with a history of gastric cancer, initially treated by subtotal gastrectomy, with subsequent recurrence in the periampullary region and peritoneal metastases, presented with abdominal distension and obstipation for 3 days. He was started on intravenous hydration and kept nil per os. A computed tomography (CT) scan of the abdomen showed involution of the right-sided colon and neighboring peritoneal thickening, with a target sign, and dilated cecum and small-bowel loops, suggestive of right-sided colocolic intussusception ([Fig. 1]).
Fig. 1 Computed tomography scan of the abdomen showing colocolic intussusception, with the target sign (arrow).
In view of his metastatic disease, the patient was referred for colonoscopy and decompression. Colonoscopy was done with a distal transparent attachment using a flushing pump. Edematous infiltrated mucosa, with involuted bowel and luminal narrowing was seen at the hepatic flexure. The colonoscope was negotiated beyond the narrowing with gentle manipulation ([Fig. 2]). A 25 × 90-mm WallStent colonic self-expanding metal stent (SEMS; Boston Scientific, Marlborough, Massachusetts, USA) was placed across the narrowing under fluoroscopic guidance ([Fig. 3]; [Video 1]). The distal end of the stent was fixed with clips. The patient improved with free passage of stools and flatus. Plain radiography of the abdomen on the evening of the procedure showed the expanded SEMS, with no evidence of dilated bowel ([Fig. 4]).
Fig. 2 Endoscopic image of the infiltrated segment at the hepatic flexure of the colon, which was acting as the lead point for the intussusception.
Fig. 3 Fluoroscopic image showing the colonic self-expanding metal stent deployed over the guidewire.
Video 1 Management of colocolic intussusception in an adult by placement of a colonic stent.
Fig. 4 Plain radiograph of the abdomen post-stent placement showing the expanded colonic stent and no evidence of bowel dilatation, with a biliary self-expanding metal stent also visible.
Intussusception is a rare cause of colonic obstruction, with the colon accounting for 5 % of all instances of intussusception [1]. In adults, about half of bowel intussusceptions result from malignancy, with surgical resection being required in 72 % of patients [2]. Endoscopic management of ileocecal intussusception with hyperinsufflation at the lead point has been described previously [3]. In adults, intussusception is managed mostly with surgery, unlike in children where it is managed conservatively [4], although recurrence of intussusception is known to occur in up to 20 % children after conservative management [5]. In this case, SEMS placement was planned to prevent recurrent episodes of intussusception as surgery was deferred owing to the metastatic disease. To the best of our knowledge, no previous reports of the endoscopic management of colocolic intussusception are available.
Endoscopy_UCTN_Code_TTT_1AQ_2AF
Endoscopy E-Videos is an open access online section, reporting on interesting cases and new techniques in gastroenterological endoscopy. All papers include a high quality video and all contributions are freely accessible online. Processing charges apply (currently EUR 375), discounts and wavers acc. to HINARI are available.
This section has its own submission website at https://mc.manuscriptcentral.com/e-videos
