Mediastinal T Acute Lymphoblastic Leukemia

**Semantic type:** Neoplastic Process

**Definition:** A precursor T-cell lymphoblastic leukemia that involves the mediastinum. It usually affects adolescent and young adult males. It is treated with aggressive chemotherapy and radiation.

**Synonyms:** - Mediastinal Precursor T-Lymphoblastic Leukemia - Mediastinal T-Acute Lymphoblastic Leukemia - Mediastinal T-Cell Acute Lymphoblastic Leukemia