Stage IA Lung Non-Small Cell Carcinoma AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** Stage IA includes: (T1a, N0, M0); (T1b, N0, M0). 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). N0: No regional lymph metastasis. M0: No distant metastasis. (AJCC 7th ed.)

**Synonyms:** - Stage IA Non-Oat Cell Carcinoma of Lung - Stage IA Non-Oat Cell Carcinoma of the Lung - Stage IA Non-Oat Cell Lung Carcinoma - Stage IA Non-Small Cell Carcinoma of Lung - Stage IA Non-Small Cell Carcinoma of the Lung - Stage IA Non-Small Cell Lung Cancer - Stage IA Non-Small Cell Lung Carcinoma - Stage IA Non-Small Cell Lung Carcinoma AJCC v7 - stage IA non-small cell lung cancer