A new hernia: Meckel's diverticulum within a parastomal hernia.

A Meckel's diverticulum is a true diverticulum containing all layers of bowel wall. An infrequently encountered sequela of this is a Littre's hernia, typically inguinal or femoral. This is the first description of a Meckel's diverticulum within a parastomal hernia. When encountered incidentally at surgery, resection should be considered on a case-by-case basis to prevent future complications of bleeding, obstruction or perforation.