Table 1 Demographic and baseline characteristics of the entire cohort
Characteristics | Brachytherapy group (N = 74) | MWA group (N = 48) | P value |
|---|---|---|---|
Sex, no. (%) Male Female | 42 (56.8%) 32 (43.2%) | 26 (54.2%) 22 (45.8%) | 0.842 |
Mean age (years) Age (years), no. (%) <65 ≥65 Primary tumor location, no. (%) Right colon Left colon Rectum Historical characteristics, no. (%) Adenocarcinoma Others Maximum tumor diameter (cm, mean ± SD) Tumor size, no. (%) ≤3 cm >3 cm Tumor number, no. (%) 1 2 3 Distribution of lung metastasis, no. (%) Unilateral Bilateral | 63.6 ± 8.7 46 (62.2%) 28 (37.8%) 30 (40.5%) 20 (27%) 22 (32.5) 67 (90.5%) 7 (9.5%) 5.7 ± 2.4 38 (51.4%) 36 (48.6%) 18(24.3%) 34(46%) 22(29.7%) 44 (59.5%) 30 (40.5%) | 58.5 ± 9.2 28 (58.3%) 20 (41.7%) 18 (37.5%) 16 (33.3%) 14 (29.2%) 43 (89.6%) 5 (10.4%) 2.5 ± 0.8 40 (83.3%) 8 (16.7%) 18(37.5%) 14(29.2%) 16(33.3%) 24 (50%) 24 (50%) | 0.357 0.765 0.869 > 0.99 0.027 0.011 0.376 0.467 |
Location of lung metastasis, no. (%) Adjacent to the hilum Adjacent to the pleura/interlobar fissure | 28 (37.8%) 26 (35.1%) | 6 (12.5%) 12 (25%) | 0.016 |
None of the above Lung metastasis, no. (%) Metachronous Synchronous CEA (ng/ml), no. (%) <10 ≥10 Administration of TKI and/or immunotherapy, no. (%) Yes No | 20 (27.1%) 56 (75.7%) 18 (24.3%) 28 (37.8%) 46 (62.2%) 24 (32.4%) 50 (67.6%) | 30 (62.5%) 34 (70.8%) 14 (29.2%) 24 (50%) 24 (50%) 14 (29.2%) 34 (70.8%) | 0.674 0.348 0.842 |