Jejunogastric intussusception. A new diagnostic test.

Jejunogastric intussusception is a rare complication of gastrojejunal reconstruction of unknown cause. There are two types of jejunogastric intussusception: the acute type, presenting as a surgical emergency, and the chronic intermittent type, which is difficult to diagnose and is usually of mild symptomatology but which may progress to the acute type with the incarceration of the intussusceptum. With two case reports and a literature review, an endoscopic diagnostic maneuver is proposed, hinting at disordered motility with reversed peristalsis as a possible causative factor. Corrective surgical treatment to prevent recurrence and incarceration in chronic cases is advocated. Treatment should include dismantling of the efferent loop, which is the most frequent intussusceptum.