Thorax

Question 1

Lung

Answer 1

pT1a: <= 1 cm
pT1b: > 1 cm but <= 2 cm
pT1c: > 2 cm but <= 3 cm
pT2a: > 3 cm, but <= 4 cm
pT2b: > 4 cm, but <= 5 cm (or invade bronchus, or visceral pleura
pT3: > 5 cm but <= 7 cm; or invading parietal pleura, chest wall, phrenic nerve, pericardium; or separate nodule(s) in same lobe
pT4: > 7 cm; or invades diaphragm, mediastinum, heart, great vessels, trachea, recurrent laryngeal nerve, esophagus, vertebral body or carina; or separate tumor nodule(s) in an ipsilateral lobe different from that of the primary

Question 2

Pleural mesothelomia

Answer 2

pT1: limited to ipsilateral parietal pleura
pT2: involving each of the pleural surfaces with: diaphragmatic muscle; underlying lung parenchyma
pT3: locally advanced but potentially resectable tumor. (features: endothoracic fascia; mediastinal fat; solitary resectable focus in soft tissues of chest wall; pericardium
pT4: Describes locally advanced technically unresectable tumor. (features: diffuse extension or multifocal masses of tumor in the chest wall, direct extension to peritoneum; or contralateral pleura; or mediastinal organs; or spine; myocardium)

Question 3

Thymus

Answer 3

pT1a: no mediastinal pleura involvement
pT1b: direct invasion mediastinal pleura
pT2: direct invasion pericardium
pT3: with direct invasion into lung, brachiocephalic vein, superior vena cava, phrenic nerve, chest wall, or extrapericardial pulmonary artery or veins

pT4: invasion into: aorta (ascending, arch, or descending), arch vessels, intrapericardial pulmonary artery, myocardium, trachea, esophagus