Primary Central Nervous System Mature T-Cell and NK-Cell Non-Hodgkin Lymphoma

**Semantic type:** Neoplastic Process

**Definition:** A primary central nervous system non-Hodgkin lymphoma derived from mature or post-thymic T-cells or NK-cells.

**Synonyms:** - Primary Mature T-Cell and NK-Cell Non-Hodgkin Lymphoma of the Central Nervous System