Table 2. All qualitative MR features and their associations with LMS.
| Qualitative MR features | Reader 1 | Reader 2 | |||||
|---|---|---|---|---|---|---|---|
| ALM (N=22) N (%) | LMS (N=19) N (%) | p-value | ALM (N=22) N (%) | LMS (N=19) N (%) | p-value | ||
| Pelvic fluid | Absent | 14 (63.6) | 10 (52.6) | 0.54 | 16 (72.7) | 10 (52.6) | 0.21 |
| Present | 8 (36.4) | 9 (47.4) | 6 (27.3) | 9 (47.4) | |||
| Borders | Smooth | 20 (90.9) | 3 (15.8) | <0.0001 | 19 (86.4) | 5 (26.3) | 0.0001 |
| Nodular | 2 (9.1) | 16 (84.2) | 3 (13.6) | 14 (73.7) | |||
| Haemorrhage | Absent | 18 (81.8) | 1 (5.3) | <0.0001 | 21 (95.5) | 0 (0.0) | <0.0001 |
| Present | 4 (18.2) | 18 (94.7) | 1 (4.5) | 19 (100.0) | |||
| Signal intensity on T2WIa | Hypointense | 4 (18.2) | 1 (5.3) | 0.34 | 6 (27.3) | 1 (5.3) | 0.17 |
| Isointense | 11 (50.0) | 8 (42.1) | 10 (45.5) | 10 (52.6) | |||
| Hyperintense | 7 (31.8) | 10 (52.6) | 6 (27.3) | 8 (42.1) | |||
| Heterogeneity on T2WI | Homogenous | 6 (27.3) | 1 (5.3) | 0.10 | 5 (22.7) | 0 (0.0) | 0.05 |
| Heterogeneous | 16 (72.7) | 18 (94.7) | 17 (77.3) | 19 (100.0) | |||
| Cystic alteration(s) | Absent | 10 (45.5) | 3 (15.8) | 0.05 | 8 (36.4) | 2 (10.5) | 0.08 |
| Present | 12 (54.5) | 16 (84.2) | 14(63.6) | 17 (89.5) | |||
| Location of cystic alteration(s) | None | 10 (45.5) | 3 (15.8) | 0.32 | 8 (36.4) | 2 (10.5) | 0.17 |
| Peripheral | 6 (27.3) | 4 (21.1) | 6 (27.3) | 3 (15.8) | |||
| Central | 2 (9.1) | 6 (31.6) | 1 (4.5) | 5 (26.3) | |||
| Central + peripheral | 4 (18.2) | 6 (31.6) | 7 (31.8) | 9 (47.4) | |||
| Fluid-fluid level(s) | Absent | 21 (95.5) | 16 (84.2) | 0.32 | 21 (95.5) | 16 (84.2) | 0.32 |
| Present | 1 (4.5) | 3 (15.8) | 1 (4.5) | 3 (15.8) | |||
| “T2 dark” area(s) | Absent | 19 (86.4) | 3 (15.8) | <0.0001 | 19 (86.4) | 4 (21.1) | <0.0001 |
| Present | 3 (13.6) | 16 (84.2) | 3 (13.6) | 15 (78.9) | |||
| Flow voids | Absent | 8 (36.4) | 0 (0.0) | 0.0041 | 11 (50.0) | 0 (0.0) | 0.0002 |
| Present | 14 (63.6) | 19 (100.0) | 11 (50.0) | 19 (100.0) | |||
| Signal intensity on contrasted imagesβ | Hypointense | 4 (18.2) | 8 (42.1) | 0.28 | 5 (22.7) | 9 (47.4) | 0.14 |
| Isointense | 15 (68.2) | 10 (52.6) | 15 (68.2) | 10 (52.6) | |||
| Hyperintense | 3 (13.6) | 1 (5.3) | 2 (9.1) | 0 (0.0) | |||
| Heterogeneity on contrasted images | Homogenous | 8 (36.4) | 0 (0.0) | 0.0041 | 8 (36.4) | 0 (0.0) | 0.0041 |
| Heterogeneous | 14 (63.6) | 19 (100.0) | 14 (63.6) | 19 (100.0) | |||
| Unenhanced area(s) | Absent | 9 (40.9) | 0 (0.0) | 0.0017 | 8 (36.4) | 0 (0.0) | 0.0041 |
| Present | 13 (59.1) | 19 (100.0) | 14 (63.6) | 19 (100.0) | |||
| Location of unenhanced area(s) | None or Non-central | 16(72.7) | 1 (5.3) | <0.0001 | 15 (68.2) | 0 (0.0) | <0.0001 |
| Central | 6 (27.3) | 18 (94.7) | 7 (31.8) | 19 (10.0) | |||
Note: ALM atypical leiomyoma, LMS leiomyosarcoma, T2WI T2-weighted image
a
Relative to the outer myometrium
β
Relative to the myometrium