Abstract
An 82-year-old man was treated by antibiotics because of right lower abdominal pain. The symptoms did not improved ; he was diagnosed as having a gastrointestinal perforation on abdominal contrast-enhanced CT. A localized peritonitis with an intraperitoneal abscess caused by small intestinal diverticulitis was diagnosed ; emergency surgery was done.
Many diverticula were found on the mesenteric side of the jejunum, and a mesenteric abscess was suspected. Thus, a partial jejunectomy was done. Since on histology no intestinal mucosa was seen in the diverticulum wall, an intraperitoneal abscess caused by small intestinal false diverticulitis was diagnosed. According to previous reports, diverticula of the small intestine are rather rare, and in many cases a false diverticulum is present in the jejunum. Our review of the 41 papers indicates that perforation or penetration of a false diverticulum of the small intestine occurred in 36 cases. The diverticulum was reported to have been located in the jejunum in 31 cases and in the ileum in 10 cases. Small intestine diverticula were most commonly found close to the ileum.
