Stage IV Thymus Epithelial Neoplasm AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage IV includes: IVA: (Any T, N1, M0); (Any T, N0-N1, M1a); IVB: (Any T, N2, M0-M1a); (Any T, Any N, M1b). N0: No involvement of regional lymph node(s). N1: Involvement of anterior (perithymus) lymph nodes. N2: Involvement of deep intrathoracic or cervical lymph nodes (e.g., paratracheal, subcarinal, aortopulmonary window, hilar, jugular, and/or supraclavicular nodes). M0: No distant metastasis. M1a: Separate pleural or pericardial nodule(s). M1b: Pulmonary intraparenchymal nodule or other distant metastasis. (AJCC 9th ed.)

**Synonyms:** - Stage IV Thymic Epithelial Neoplasm AJCC v9 - Stage IV Thymus Epithelial Tumor AJCC v9