Table 1 Definition of T category in 7-TNM and 8-TNM
7-TNM | 8-TNM | |
|---|---|---|
T1 | Surrounded by visceral PL and not in MB | Surrounded by visceral PL and not in MB |
T1mi | - | Minimal invasive adenocarcinoma |
T1a | Size ≤2 cm | Size ≤1 cm |
T1b | 2 cm < size ≤3 cm | 1 cm < size ≤2 cm |
T1c | - | 2 cm < size ≤3 cm |
T2 | MB (≥ 2 cm distal to carina), visceral PL, partial LA or OP | MB (regardless of distance from carina), visceral PL, part or all LA or OP |
T2a | 3 cm < size ≤5 cm | 3 cm < size ≤4 cm |
T2b | 5 cm < size ≤7 cm | 4 cm < size ≤5 cm |
T3 | Size >7 cm Parietal PL, chest wall, diaphragm, phrenic N, mediastinal PL, parietal pericardium, MB (< 2 cm distal to carina), entire LA or OP, separate nodule in same lobe | 5 cm < size ≤7 cm Separate nodule in same lobe, parietal PL, chest wall, phrenic N, mediastinal PL, parietal pericardium |
T4 | Mediastinum, heart, great vessels, trachea, recurrent laryngeal N, esophagus, vertebral body, carina, separate nodule in a different ipsilateral lobe | Size >7 cm Separate nodule in a different ipsilateral lobe, diaphragm, mediastinum, heart, great vessels, trachea, recurrent laryngeal N, esophagus, vertebral body, carina |