Transomental Herniation Mimicking Sigmoid Volvulus

Abstract

Transomental herniation as a mechanism for large bowel obstruction is a comparative surgical rarity. The second such case is presented, together with a brief review of available literature. The pathogenesis of omental foraminae is discussed, and an additional aetiological mechanism is proposed.

A knot in the gut: A paediatric post-mortem CT diagnosis

“…These intestinal herniations usually contain small bowel loops leading to small bowel obstruction [6,[14][15][16]. Only two cases of transomental herniation of the sigmoid colon leading to LBO have been described [17,18].…”

Image of the Month—Diagnosis

“…In the absence of groin hernias, LBO, with either a sigmoid volvulus or its variant ileosigmoid knotting, has been reported in a case series of 12 patients. 6 There have also been reports of herniation of a sigmoid volvulus through transverse mesocolon, 7 transomental herniation mimicking sigmoid volvulus, 8 and retrorectal hernia of the sigmoid colon associated with diverticulitis. 9 Together, hernias, either internal or external, are a rare cause of LBO and are even less frequently coincident with sigmoid volvulus.…”