The distal and narrowest portion of the SMALL INTESTINE, between the JEJUNUM and the ILEOCECAL VALVE of the LARGE INTESTINE.

Annotation

do not confuse with ILEUS or ILIUM; /surg: consider ILEOSTOMY; inflammation = ILEITIS; ileocecal intussusception or invagination: index under ILEOCECAL VALVE (IM) + INTUSSUSCEPTION (IM) + ILEAL DISEASES (NIM); ileocolic intussusception: index under ILEAL DISEASES (IM) + INTUSSUSCEPTION (IM) but not also COLONIC DISEASES; ileum as smooth muscle is probably MUSCLE, SMOOTH (IM) + ILEUM (NIM); jejuno-ileal bypass or shunt or jejuno-ileostomy in obesity: index under JEJUNOILEAL BYPASS (note XR ref)

DUI

D007082 MeSH Browser

CUI

M0011030