A-54-year-old male presented epigastric pain, loss of appetite and body weight loss 3 months prior to admission. An abdominal CT showed the dilatation of small intestine. We diagnosed as Enteropathy Associated T-cell Lymphoma (EATL) / Monomorphic epitheliotropic intestinal TCL (MEITL) by biopsy specimens under double-balloon-endoscopy. He was evaluated as stage IVB according to Ann Arbor staging classification. He was treated with CHOP therapy for 2 cycles. EATL is one of the rare diseases in Japan and known of poor prognosis. Here we show the usefulness of double-balloon-endoscopy for the diagnosis of EATL with brief review of literature.
