ocr: TNM DESCRIPTIONS Primary Tumor and Extent Tx Primary tumor cannot be assessed TO No evidence of primary tumor T1 Primary tumor limited to ipsilateral parietal or visceral pleura T2 Tumor invades any oft the following: ipsilateral lung, en- dothoracic fascia, diaphragm, pericardium T3 Tumor invades any oft the following: - ipsilateral chest wall muscle, ribs, mediastinal organs or tissues T4 Tumor extends to any of the following: contralateral pleura or lung by direct extension, peritoneum or intra- abdominal organs by direct extension, cervical tissues Lymph Nodes Nx Regional lymph nodes canno ...
