label: Mediastinal T Lymphoblastic Lymphoma
label_lc: mediastinal t lymphoblastic lymphoma
description: "A precursor T-lymphoblastic lymphoma that arises from the mediastinum.  It usually presents with an anterior mediastinal mass and respiratory distress.  It may present acutely with superior vena cava syndrome.  It usually affects adolescent and young adult males.  It is treated with aggressive chemotherapy and radiation.  The prognosis is better in the pediatric patients."