Parameters | Benign nodules | Malignant nodules | P |
---|---|---|---|
Age (years) | 57.4 ± 13.4b | 45.5 ± 12.7b | 0.700 |
Gender (male: female) | 37:111a | 23:88a | 0.419 |
Size (mm) | 20.1 ± 12.6b | 12.0 ± 7.5b | < 0.001 |
Location | 0.525 | ||
Right lobe | 78 (52.7%) | 62 (55.9%) | |
Isthmus of thyroid | 7 (4.7%) | 8 (7.2%) | |
Left lobe | 63 (42.6%) | 41 (36.9%) | |
Margin | 0.080 | ||
Clear | 45 (30.4%) | 23 (20.7%) | |
Vague | 103 (69.6%) | 88 (79.3%) | |
Shape | < 0.001 | ||
Regular | 136 (91.9%) | 11 (9.9%) | |
Irregular | 12 (8.1%) | 100 (90.1%) | |
Pseudocapsule sign | < 0.001 | ||
Yes | 70(47.3%) | 6(5.4%) | |
No | 78(52.7%) | 105(94.6%) | |
Signal intensity | 0.079 | ||
Homogeneous | 17 (11.5%) | 22 (19.8%) | |
Heterogeneous | 131 (88.5%) | 89 (80.2%) | |
Cystic degeneration | < 0.001 | ||
Yes | 102(68.9%) | 19(17.1%) | |
No | 46(31.1%) | 92(82.9%) | |
High signal cystic area on T1WI | < 0.001 | ||
Yes | 63(42.6%) | 9(8.1%) | |
No | 85(57.4%) | 102(91.9%) | |
Ring sign | < 0.001 | ||
Yes | 2(1.4%) | 72(64.9%) | |
No | 146(98.6%) | 39(35.1%) | |
ADC values (×10−3 mm2/s) | 1.946 ± 0.349b | 1.260 ± 0.225b | < 0.001 |
Degree of enhancement | 0.012 | ||
Mild | 11 (7.4%) | 10 (9.0%) | |
Moderate | 89 (60.1%) | 82 (73.9%) | |
Marked | 48 (32.5%) | 19 (17.1%) |