Mesodiverticular band.
The mesodiverticular band is an embryologic remnant of the vitelline circulation which carries the arterial supply to the Meckel's diverticulum. In the event of an error of involution, a patent or nonpatent arterial band persists and extends from the mesentery to the apex of the antimesenteric diverticulum. This creates a snare-like opening through which bowel loops may herinate and become obstruced. Clinical and radiological findings of acute, low, small-bowel obstruction are produced by this band.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging / Q000209:etiology*; D007421:Intestine, Small / Q000000981:diagnostic imaging; D008297:Male; D008467:Meckel Diverticulum / Q000000981:diagnostic imaging / Q000196:embryology* / Q000601:surgery; D011859:Radiography