Staging of diffuse pleural malignant mesothelioma
| Butchart et al staging 14 | |||
| I | Tumour confined to ipsilateral pleura and lung | ||
| II | Tumour involving contralateral pleura, chest wall, mediastinum, pericardium | ||
| III | Tumour involving both the thorax and abdomen or extrathoracic lymph nodes | ||
| IV | Distant blood borne metastases | ||
| Proposed TNM staging 15 | |||
| Primary tumour | |||
| T1 | Limited to ipsilateral pleura only | ||
| T2 | Superficial local invasion | ||
| T3 | Deep local invasion | ||
| T4 | Extensive direct invasion | ||
| Lymph nodes (LN) | |||
| N0 | No positive lymph node | ||
| N1 | Positive ipsilateral hilar LN | ||
| N2 | Positive mediastinal LN | ||
| N3 | Positive contralateral hilar LN | ||
| Metastases | |||
| M0 | No metastases | ||
| Ml | Blood borne or lymphatic metastases | ||
| Stage groupings | |||
| I | Tl or T2 | N0 | M0 |
| II | T1 or T2 | NI | M0 |
| III | Tl or T2 | N2 | M0 |
| T3 | Nl or N2 | M0 | |
| IV | Any T | N3 | M0 |
| T4 | Any N | M0 | |
| Any T | Any N | M1 | |