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Table 1 Characteristics of the patients and MRI features of the thyroid nodules

From: Diagnostic efficacy of multiple MRI parameters in differentiating benign vs. malignant thyroid nodules

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%)  
  1. Data are numbers of patients, unless indicated otherwise. Numbers in parentheses are percentages
  2. aGender ratio
  3. bmeans ± standard deviation