Jejunal diverticulosis is an uncommon condition, but it is often associated with a number of symptoms including postprandial abdominal pain, distension, flatulence, borborygmus, nausea, vomiting, diarrhea and constipation and with complications such as vomiting blood or coffee grounds material, melena and shock. The authors report such a condition in a 71-year-old man. Resection is the treatment of choice for relieving symptoms, and for preventing or treating complications.