Stage IIIA Thymoma AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage IIIA includes: T3, N0, M0. T3: Tumor with direct invasion into any of the following: brachiocephalic vein, superior vena cava, chest wall, or extrapericardial pulmonary artery or veins. N0: No involvement of regional lymph node(s). M0: No distant metastasis. (AJCC 9th ed.)