Lymphoepithelioid Variant Peripheral T-Cell Lymphoma, Not Otherwise Specified

**Semantic type:** Neoplastic Process

**Definition:** A variant of peripheral T-cell lymphoma, not otherwise specified. It is characterized by the presence of neoplastic small lymphocytes infiltrating the lymph nodes in a diffuse and less frequently interfollicular pattern. There is an associated proliferation of epithelioid histiocytes forming confluent clusters.

**Synonyms:** - Lennert Lymphoma - Lennert Variant Peripheral T-Cell Lymphoma - Lennert lymphoma - Lennert's Lymphoma - Lennert's Variant Peripheral T-Cell Lymphoma - Lymphoepithelioid Cell Variant Peripheral T-Cell Lymphoma - Lymphoepithelioid Variant Peripheral T-Cell Lymphoma - Lymphoepithelioid Variant Peripheral T-Cell Lymphoma - Lymphoepithelioid Variant Peripheral T-Cell Lymphoma, NOS