NCIt synonyms : Stage IB Non-Small Cell Carcinoma of Lung; Stage IB Non-Small Cell Carcinoma of the Lung; Stage IB Non-Oat Cell Carcinoma of Lung; Stage IB Non-Oat Cell Lung Carcinoma; Stage IB Non-Oat Cell Carcinoma of the Lung; Stage IB Non-Small Cell Lung Carcinoma; Stage IB Non-Small Cell Lung Carcinoma AJCC v7;
NCIt related terms : Stage IB Non-Small Cell Lung Cancer;
NCIt definition : Stage IB includes: T2a, N0, M0. T2a: Lung cancer with a tumor size more than 3 cm
but 5 cm or less in greatest dimension. N0: No regional lymph metastasis. M0: No distant
metastasis. (AJCC 7th ed.);
Alternative definition : NCI-GLOSS: Stage I non-small cell lung cancer is divided into stages IA and IB. In
stage IB, cancer has not spread to the lymph nodes and one or more of the following
is true: (1) the tumor is larger than 3 centimeters but not larger than 5 centimeters;
(2) cancer has spread to the main bronchus and is at least 2 centimeters below where
the trachea joins the bronchus; (3) cancer has spread to the innermost layer of the
membrane that covers the lung; and/or (4) part of the lung has collapsed or become
inflamed.;