disease has location T cell immune system cancer small intestine lymphoma leukocyte disorder small intestinal enteropathy-associated T-cell lymphoma UMLS:C1519371 small intestine enteropathy-associated T-cell lymphoma GARD:0024406 MEDGEN:275445 small intestinal EATL small intestinal enteropathy-type T-cell lymphoma NCIT:C39610 enteropathy-associated T-cell lymphoma of small intestine An enteropathy-associated T-cell lymphoma arising from the small intestine, most commonly the jejunum or ileum. Patients usually present with abdominal pain, often associated with intestinal perforation. There is often a history of celiac disease. The lymphoma cells are usually medium-sized to large and form an ulcerating mucosal lesion with invasion of the small intestinal wall. Villous atrophy is present in the adjacent small intestinal mucosa. In a minority of cases the lymphoma cells are medium-sized and form a monomorphic infiltrate. MONDO:0006418 EFO:1000535 enteropathy-associated T-cell lymphoma small intestine