Internal hernia through the mesosalpinx: a lesson to learn.

An internal hernia through the mesosalpinx is a rare condition which is often overlooked. We report the case of a 65-year-old lady who presented with features of small bowel obstruction. At laparotomy, a gangrenous ileum was found to have herniated through a defect in the right mesosalpinx. We discuss this rare cause of a small bowel obstruction and its diagnostic dilemma.