Table 1 Comparison of the basic and CT morphological characteristics between the RMS group and the non-RMS group.
RMS group (n = 36) | Non-RMS group (n = 85) | Statistic | P value | |
|---|---|---|---|---|
Baseline | ||||
Age (year) Q (Q1–Q3) | 2.5 (1–6.5) | 6 (1–9) | 1.767 a | 0.077 |
Sex (male/female) | 14/22 | 24/61 | 1.332 b | 0.248 |
Density N (%) | ||||
Lower than normal muscle density | 35 (97.2) | 51 (60.4) | 17.043 b | < 0.001 |
Calcification | 1 (2.8) | 23 (27.1) | 9.377 b | 0.002 |
Hemorrhage | 5 (13.9) | 28 (32.9) | 4.628 b | 0.031 |
Necrosis | 35 (97.2) | 71 (83.5) | 0.066 | |
Shape N (%) | ||||
Multinodular fusion | 23 (63.9) | 10 (11.8) | 34.641 b | < 0.001 |
Lobulated | 28 (77.8) | 44 (51.8) | 7.102 b | 0.008 |
Round/orbicular | 6 (16.7) | 22 (25.9) | 1.208 b | 0.272 |
Margin N (%) | ||||
Unclear | 8 (22.2) | 26 (30.6) | 0.876 b | 0.349 |
Enhancement feature N (%) | ||||
Surrounding blood vessels | 29 (80.6) | 16 (18.8) | 41.257 b | < 0.001 |
Heterogeneous progressive centripetal enhancement | 31 (86.1) | 10 (11.8) | 62.395 b | < 0.001 |
Ring enhancement | 5 (13.9) | 6 (7.1) | c | 0.300 |
Grape cluster reinforcement | 0 (0.0) | 71 (0.0) | – | – |
Metastasis N (%) | ||||
Lymphatic metastasis | 12 (33.3) | 14 (16.5) | 4.263 b | 0.039 |
Bone erosion | 2 (5.6) | 5 (5.9) | c | 1.000 |
