Table 1: The basic characteristics and ultrasound features for the 157 patients with 173 thyroid nodules.


Patients ( )
 Sex (Male/Female)20/5115/710.108
 Age (yrs)54 ± 8 (32–71)49 ± 11 (22–78)0.001
 Single nodule/multiple nodules11/6020/660.224
Nodules ( )
 Diameter (mm)8.2 ± 1.4 (5–10)7.7 ± 1.5 (5–10)0.031
  Left lobe31 39
  Right lobe4451
  Isthmus 26
  Markedly hypoechoic2046
  Mixed 41
  Ovoid to round5539
  Taller than wide1352
 Halo sign0.023
  Type I5479
  Type II140
  Type III917

Caption: There were significant differences between benign and malignant nodules.
Significant differences were found in age of patients, diameter of nodules, echogenicity of nodules, calcification of nodules, shape of nodules, halo sign (all ). Significant differences were found between any two types of vascular patterns ( ). There was no significant difference in gender, solitary nodule or not, location of nodules and margin of nodules between benign and malignant nodules (all ).