Twenty-one cases of small bowel intussusception: the pathophysiology of idiopathic intussusception and the concept of benign small bowel intussusception

Abstract

Ultrasonography (US) was used to study intussusceptions prospectively at Kiyama Hospital in 1999 and 2000 under the classification of small bowel intussusception (SBI) and large bowel or ileo-ileo-colic intussusception (LBI). The clinical features, management, outcome and etiology were analyzed. All LBIs and SBIs with ischemic symptoms and SBIs complicated by LBI were treated by enema reduction, whereas SBIs considered to be nonischemic were observed. SBI was seen in 21 patients with a mean age of 62.6+/-31.2 months. Four cases (19.0%) were diagnosed during the course of LBI. US showed mesenteric lymphoid hyperplasia in 15 (71.4%). Hydrostatic enema reduction was successful in 9/9, and SBI r..