Table 1.
Data for clinical stage (as defined by the institutional radiologists), surgical/pathological stage
| Number of cases (%) | |
|---|---|
| Clinical Stage | |
| I | 4 (3.1%) |
| II | 37 (28.7%) |
| III | 63 (48.8%) |
| IV | 18 (14.0%) |
| Pathological Stage | |
| I | 4 (3.1%) |
| II | 9 (7.0%) |
| III | 54 (41.9%) |
| IV | 58 (45.0%) |
| Histological Subtype | |
| Epithelioid | 105 (81.3%) |
| Biphasic | 12 (9.3%) |
| Sarcomatoid or NOS1 | 12 (9.3%) |
Incomplete staging data from participating sites at the level of T and N descriptor detail required by the IASLC electronic data capture system were available in a small number of cases (4 surgical/pathological stage). For study purposes, clinical T stage was assigned in all cases by the institutional radiologists and was again re-read in a blinded manner by the reference radiologists.
1
NOS = not otherwise specified.