# Colonic Intussusception in Adults: A Case Report of an Unusual Cause of Abdominal Pain

## TL;DR

This case report describes an adult with abdominal pain caused by a rare condition called colonic intussusception due to a large tumor.

## Contribution

The report highlights a rare cause of abdominal pain and illustrates clinical decision-making in diagnosing and treating intussusception.

## Key findings

- A tumor covering 90% of the intestinal lumen was found to cause colonic intussusception.
- Right hemicolectomy successfully treated the condition with a confirmed diagnosis of infiltrating adenocarcinoma.
- CT scan and colonoscopy were key in identifying the obstruction and tumor.

## Abstract

Intussusception is a rare cause of intestinal obstruction in adults, which can present as a complete or partial obstruction. We present the case of a patient who is admitted with abdominal pain in the epigastrium and right hypochondrium, accompanied by weight loss and melanic evacuations. The computed tomography (CT) scan found no adequate passage of oral contrast, and the site of the leading point of intussusception was in the ascending colon. The colonoscopy located a tumor covering approximately 90% of the intestinal lumen. A right hemicolectomy with ileo-transverse lateral-lateral anastomosis was performed, and the pathological report of the surgical specimen reported an infiltrating adenocarcinoma. This case report is significant for the clinical decision-making process it exemplifies.