Table 1 Patient characteristics
Characteristics | PM group (n = 59) | SBRT group (n = 21) | P value |
|---|---|---|---|
Sex | |||
Male | 35 (59%) | 14 (67%) | |
Female | 24 (41%) | 7 (33%) | N.S. |
Age (years) | |||
Mean ± SD | 60.6 ± 14.6 | 67.4 ± 10.9 | 0.03 |
Range | 28–84 | 39–82 | |
Primary tumor | |||
Colorectal cancer | 27 (46%) | 6 (29%) | |
Gynecologic malignancies | 8 (14%) | 2 (10%) | |
Head and neck squamous cell carcinoma | 3 (5%) | 8 (38%) | |
Renal cell carcinoma | 7 (12%) | 0 (0%) | |
Salivary gland tumor | 3 (5%) | 0 (0%) | |
Breast cancer | 1 (2%) | 2 (10%) | |
Esophageal cancer | 3 (5%) | 2 (10%) | |
Others | 7 (12%) | 1 (5%) | < 0.01 |
Treatment mode for primary tumor | |||
Treatment includes surgery | 58 (98%) | 11 (52%) | |
Chemoradiotherapy or radiotherapy | 1 (2%) | 10 (48%) | < 0.01 |
Disease free interval (months) | |||
Mean | 28 | 27 | |
Range | 0–128 | 0–111 | |
0(synchronous) | 11 (19%) | 2 (10%) | |
1–12 | 13 (22%) | 6 (29%) | |
13–24 | 7 (12%) | 5 (24%) | |
24- | 28 (47%) | 8 (38%) | N.S. |
No. of lesions | |||
1 | 45 (76%) | 15 (72%) | |
2 | 10 (17%) | 3 (14%) | |
3 | 3 (5%) | 3 (14%) | |
4 | 1 (2%) | 0 (0%) | N.S. |
Size of target lesion (cm) | |||
Mean ± SD | 1.6 ± 1.1 | 1.6 ± 0.6 | N.S. |
Range | 0.6–8.5 | 0.9–3.1 | |
Metastasis besides lung at the time of pulmonary metastasectomy or SBRT | 15 (25%) | 7 (33%) | N.S. |
Prior chemotherapy for metastatic disease | 16 (27%) | 7 (33%) | N.S. |