Abstract
We report a case of intussusception due to a jejunal lipoma in an adult, with an analysis of 47 adult cases of intussusception due to a lipoma in the Japanese literature during the past 20 years. A 71-year-old woman was referred to the hospital because of epigastralgia and vomiting. Enhanced CT scan showed the “multiple concentric ring sign” in the left epigastrium. She was diagnosed as having intussusception due to a jejunal lipoma, and underwent emergency laparotomy. Because the invaginated jejunum because and the intussusception was unreducible, enterectomy including the intussuscepted jejunum was performed. Resected specimen showed a soft tumor measuring 5×3×3cm at the presenting part. It was diagnosed as lipoma histologically.
In seven of previously described 47 cases, the lipomas were located at the jejunum and most of them appeared within 50cm distal from the Treitz' ligament. The present case in which the lipoma was located at 90cm distal from the Treitz' ligament was rare. In all cases which could be diagnosed as intussuscep-tion caused by a lipoma preoperatively, CT was preformed. The length of resected intestine was shorter in reduced cases than that in unreduced cases. We consider that reduction would lead to less invasive surgery for intussusception due to lipoma.
