Clinical challenge: diverticulitis of third and fourth portion of the duodenum with perforation.

Duodenal diverticulum is not rare, and it represents the second most frequent place in the digestive tract. Localization of diverticula in the third or fourth portions of the duodenum is rare and the symptoms are often non-specific. Computed tomography may be helpful to make a diagnosis. We present a rare case of diverticulitis of third and fourth portion of the duodenum with perforation and it was treated successfully by duodenal-jejunostomy and abscess drainage.