Table 5

Staging of diffuse pleural malignant mesothelioma

Butchart et al staging 14
ITumour confined to ipsilateral pleura and lung
IITumour involving contralateral pleura, chest wall, mediastinum, pericardium
IIITumour involving both the thorax and abdomen or extrathoracic lymph nodes
IVDistant blood borne metastases
Proposed TNM staging 15
Primary tumour
T1Limited to ipsilateral pleura only
T2Superficial local invasion
T3Deep local invasion
T4Extensive direct invasion
Lymph nodes (LN)
N0No positive lymph node
N1Positive ipsilateral hilar LN
N2Positive mediastinal LN
N3Positive contralateral hilar LN
M0No metastases
MlBlood borne or lymphatic metastases
Stage groupings
ITl or T2N0M0
IIT1 or T2NIM0
IIITl or T2N2M0
T3Nl or N2M0
T4Any NM0
Any TAny NM1