Occult Lung Cancer AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Occult lung cancer includes: TX, N0, M0. TX: Primary tumor cannot be assessed. Includes tumors proven by the presence of malignant cells in sputum or bronchial washings but not visualized by imaging or bronchoscopy. N0: No tumor involvement of regional lymph node(s). M0: No distant metastasis. (AJCC 9th ed.)