Enteropathy-Associated T-Cell Lymphoma

**Semantic type:** Neoplastic Process

**Definition:** A mature T-cell and NK-cell non-Hodgkin lymphoma of intraepithelial T-lymphocytes. It usually arises from the small intestine, most commonly the jejunum or ileum. Other less frequent primary anatomic sites include the duodenum, stomach, colon, or outside the gastrointestinal tract. It is characterized by the presence of pleomorphic medium-sized to large T-lymphocytes with vesicular nuclei, prominent nucleoli, and moderate to abundant pale cytoplasm. It is associated with celiac disease.

**Synonyms:** - EATL - Enteropathy Associated T-Cell Lymphoma - Enteropathy associated T-cell lymphoma - Enteropathy type intestinal T-cell lymphoma - Enteropathy-Type T-Cell Lymphoma - Enteropathy-type (intestinal) T-cell lymphoma