Table 1.
Patient and Tumor Characteristics
| Characteristic | All | Inoperable | Operable |
|---|---|---|---|
| No. of patients | 55 | 21 | 34 |
| Age (y), median (range) | 71 (48–88) | 81 (65–88) | 70 (48–79) |
| Sex | |||
| Male | 32 (58%) | 15 (71%) | 17 (50%) |
| Female | 23 (42%) | 6 (29%) | 17 (50%) |
| Histology | |||
| Adenocarcinoma | 44 (80%) | 13 (62%) | 31 (91%) |
| Squamous cell carcinoma | 10 (18%) | 8 (38%) | 2 (6%) |
| NSCLC | 1 (2%) | 0 (0%) | 1 (3%) |
| ECOG performance status | |||
| 0 | 46 (84%) | 12 (57%) | 34 (100%) |
| 1 | 7 (13%) | 7 (33%) | 0 (0%) |
| 2 | 2 (4%) | 2 (10%) | 0 (0%) |
| Clinical stage (UICC 7th) | |||
| Stage IA | 33 (60%) | 13 (62%) | 20 (59%) |
| Stage IB | 22 (40%) | 8 (38%) | 14 (41%) |
| Longest tumor diameter (mm), median (range) | 27 (10–50) | 27 (14–46) | 27 (10–50) |
| Tumor location | |||
| Center (72.6 Gy(RBE)/22 Fr) | 6 (11%) | 5 (24%) | 1 (3%) |
| Periphery (66 Gy(RBE)/10 Fr) | 49 (89%) | 16 (76%) | 33 (97%) |
| Tumor site | |||
| Upper and middle lobe | 41 (75%) | 16 (76%) | 25 (74%) |
| Lower lobe | 14 (25%) | 5 (24%) | 9 (26%) |
| Smoking | |||
| Yes | 23 (42%) | 12 (57%) | 11 (32%) |
| No | 32 (58%) | 9 (43%) | 23 (68%) |
Abbreviations, NSCLC unclassified non-small cell lung cancer, ECOG Eastern Cooperative Oncology Group; UICC 7th, Union for International Cancer Control 7th edition, Gy(RBE) grays relative effectiveness, Fr fraction