We report of a 63-year-old female patient who presented in our hospital with a two day history of fever, fatigue and abdominal pain, especially in the upper left quadrant of the abdomen. She had known history of sigmoid diverticulitis. One year ago she was successfully treated with antibiotics.Initially performed sonography showed an unclear, tumor-like lesion in her upper left quadrant. It was not clearly associated with the jejunum or colon, respectively. A contrast enhanced multi-detector row (MDR) computed tomography (CT) was performed. Wall thickening of a jejunal loop with inflammatory mesenteric infiltration and three evaginations with a diameter of up to 4cm were found. The mucosa showed contrast enhancement. A small bowel diverticulitis was suspected, the indication for surgery was given.Multiple, jejunal-wall associated, tumor-like, extraluminal lesions were found in the upper left quadrant and left mesogastrium during surgery. A intestinal resection (30cm) was performed. Immediate sectioning was undertaken, in which the CT diagnosis was confirmed.