Table 1:
Characteristics of BM among primary lung cancer groups
| Total (n = 74) | Adenocarcinoma (n = 56) | Small-Cell Lung Cancer (n = 11) | Squamous Cell Carcinoma (n = 7) | P Value | |
|---|---|---|---|---|---|
| DWI visual score | 1.87 ± 0.76 | 2.27 ± 0.90 | 1.85 ± 0.69 | .298 | |
| ADCmin (×10−6mm2/s) | 615.23 ± 166.83 | 623.38 ± 163.07 | 531.18 ± 160.54 | 682.14 ± 182.07 | .131 |
| nADC ratio | 1.02 ± 0.28 | 1.04 ± 0.28 | 0.88 ± 0.2 | 1.11 ± 0.28 | .144 |
| Age (yr) | 64.19 ± 10.76 | 63.63 ± 11.15 | 68.09 ± 9.14 | 62.57 ± 9.73 | .420 |
| Male sex | 50 (67.57) | 36 (64.29) | 9 (81.82) | 5 (71.43) | .587 |
| Site of BM | .545 | ||||
| Anterior circulation—dominanta | 25 (33.78) | 21 (37.5) | 2 (18.18) | 2 (28.57) | |
| Posterior circulation—dominantb | 11 (14.86) | 7 (12.5) | 2 (18.18) | 2 (28.57) | |
| Even distribution | 38 (51.35) | 28 (50) | 7 (63.64) | 3 (42.86) | |
| No. of BMs | .051 | ||||
| 1 | 18 (24.32) | 16 (28.57) | 0 (0) | 2 (28.57) | |
| 1<BM<10 | 43 (58.11) | 32 (57.14) | 6 (54.55) | 5 (71.43) | |
| ≥10 | 13 (17.57) | 8 (14.29) | 5 (45.45) | 0 (0) | |
| Target lesion size of BM | .367 | ||||
| <10 mm | 31 (41.89) | 22 (39.29) | 7 (63.64) | 2 (28.57) | |
| 10 mm≤BM<30 mm | 32 (43.24) | 24 (42.86) | 3 (27.27) | 5 (71.43) | |
| ≥30 mm | 11 (14.86) | 10 (17.86) | 1 (9.09) | 0 (0) | |
| Intratumoral necrosis | 32 (43.24) | 21 (37.5) | 6 (54.55) | 5 (71.43) | .160 |
| Intratumoral hemorrhage | 15 (20.27) | 11 (19.64) | 3 (27.27) | 1 (14.29) | .882 |
a
BMs mainly located in the frontal, parietal, and temporal lobes.
b
BMs mainly located in the occipital lobes, cerebellum, and brain stem.