From: The role of imaging in the management of primary pleural malignancies
Stage | Â | Findings |
---|---|---|
T stage | T1a | Tumour limited to parietal pleura |
T1b | Tumour involving parietal pleura, with foci in visceral pleura | |
T2 | Tumour involving pleura with one of the following: involvement of diaphragmatic muscle confluent visceral pleural tumour (including fissures) or extension of tumour from visceral pleura into underlying pulmonary parenchyma | |
T3 | Locally advanced, but potentially resectable tumour. Tumour involving all pleural surfaces with at least one of the following: involvement of endothoracic fascia; exension into mediastinal fat; solitary, completely respectable focus of tumour extending into soft tissues of chest wall; non-transmural involvement of pericardium | |
T4 | Locally advanced, but technically unresectable. Tumour involving all pleural surfaces with at least one of the following: Diffuse extension or multifocal masses of tumour in chest wall, with or without associated rib destruction; direct transdiaphragmatic extension of tumour to peritoneum; direct extension of tumour to contralateral pleura; direct extension to one or more mediastinal organs, e.g. direct extension of tumour into spine; extension through internal surface of pericardium, with or without pericardial effusion, or involvement of myocardium | |
N stage | NX | Not assessable |
N0 | No regional nodal metastases | |
N1 | Ipsilateral bronchopulmonary or hilar metastases | |
N2 | Ipsilateral mediastinal or subcarinal metastases | |
N3 | Contralateral mediastinal, contralateral internal mammary, or ipsilateral or contralateral supraclavicular metastases | |
M stage | MX | Not assessable |
M0 | No distant metastases | |
M1 | Distant metastases | |
Stage grouping | Â | TNM equivalent |
Ia | Â | TlaN0 M0 |
Ib | Â | T1b N0 M0 |
II | Â | T2 N0M0 |
III | Â | Any T3 M0 |
 | Any N1 M0 | |
 | Any N2 M0 | |
IV | Â | Any T4 |
 | Any N3 | |
 | Any M1 |