Introduction.

Intestinal invagination or intussusception is the sliding of one part of the intestine into the adjacent one. It is the most common cause of intestinal obstruction in children between 3 months and 6 years of age, with a low incidence in adults, corresponding to 1% of all obstructive conditions in adults. Its location in the colon is rare, but special attention should be paid due to its association with malignant lesions.

Case report.

A 39-year-old male admitted to the emergency department with symptoms of intestinal obstruction secondary to a sigmoid intussusception. Endoscopic reduction was attempted, without success, so urgent surgery was indicated, performing sigmoidectomy and colorectal anastomosis. The pathology result reported a large adenoma as the cause of invagination.

Conclusion.

There are controversies regarding the endoscopic management of intussusception in adults, especially in the colon, due to the high percentage of malignant tumor etiology, currently recommending en bloc resection without reduction, to minimize the risk of potential tumor seeding.

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