Pleural Diffuse Malignant Mesothelioma pT4 TNM Finding v9

**Semantic type:** Finding

**Definition:** Pleural diffuse malignant mesothelioma with tumor invasion of any of the following: chest wall bony invasion (rib); mediastinal organs (heart, spine, esophagus, trachea, great vessels); diffuse chest wall invasion; transmural invasion of the diaphragm or pericardium; direct extension to the contralateral pleura; presence of malignant pericardial effusion. (from AJCC 9th ed.)