Stage IIA Lung Cancer AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** Stage IIA includes: (T2b, N0, M0); (T1a, N1, M0); (T1b, N1, M0); (T2a, N1, M0). T2b: Lung cancer with a tumor size more than 5 cm but 7 cm or less in greatest dimension. T1a: Lung cancer with a tumor size of 2 cm or less in greatest dimension, surrounded by lung or visceral pleura and without bronchoscopic evidence of invasion more proximal than the lobar bronchus (i.e., not in the main bronchus). The uncommon superficial tumor of any size with its invasive component limited to the bronchial wall, which may extend proximal to the main bronchus, is also classified as T1a. T1b: Lung cancer with a tumor size more than 2 cm but 3 cm or less in greatest dimension, surrounded by lung or visceral pleura and without bronchoscopic evidence of invasion more proximal than the lobar bronchus (i.e., not in the main bronchus). T2a: Lung cancer with a tumor size more than 3 cm but 5 cm or less in greatest dimension. N0: No regional lymph node metastasis. N1: Lung cancer with metastasis in ipsilateral peribronchial and/or ipsilateral hilar lymph nodes and intrapulmonary lymph nodes, including involvement by direct extension. M0: No distant metastasis. (AJCC 7th ed.)

**Synonyms:** - Stage IIA Carcinoma of Lung - Stage IIA Carcinoma of the Lung - Stage IIA Lung Cancer - Stage IIA Lung Carcinoma