Small bowel obstruction due to pericaecal internal hernia

Case contributed by Dr Chris O'Donnell


Severe abdominal pain with distension and vomitting. No past history of abdominal surgery.

Patient Data

Age: 80
Gender: Female

Marked fluid-filled distension of small bowel loops extending into right iliac fossa where there is abrupt transition to collapsed small bowel with clustered ileal loops sitting posterior and lateral to the cecum in right paracolic gutter.  These collapsed loops pass through a narrow neck (arrows) being the hernial orifice.

Case Discussion

Pericaecal hernias account for 13% of all internal hernias. The pericaecal fossa is located behind the cecum and ascending colon, and is limited by the parietocecal fold outward and the mesentericocecal fold inward. Although there are four subtypes of hernia (ileocolic, retrocecal, ileocecal, and paracaecal), the most common is a herniated ileal segment protruding through a defect in the cecal mesentery extending into the right paracolic gutter as in this case.

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Case information

rID: 34330
Published: 15th Feb 2015
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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