Mediastinal Germ Cell Tumor T1a TNM Finding

**Semantic type:** Finding

**Definition:** Mediastinal germ cell tumor confined to the organ of origin (thymus and mediastinal fat) and measuring 5 cm or less. (WHO Classification of Tumors of the Lung, Pleura, Thymus and Heart, 2015)

**Synonyms:** - Thymic Germ Cell Tumor T1a TNM Finding