Table 1.
Summary of demographic and US features for the patients with thyroid nodules.
| Characteristics | Final pathology | Total | p | |
|---|---|---|---|---|
| Benign | Malignant | |||
| No. Of nodules | 329 | 1,824 | 2,153 | |
| Age | 0.000 | |||
| Mean (years) | 48.9 ± 12.7 | 44.2 ± 11.5 | 44.9 ± 11.8 | |
| Range (years) | 14–77 | 9–79 | 9–79 | |
| <55 | 211 (64.1) | 1,459 (80.0) | 1,670 (77.6) | 0.000 |
| ≥55 | 118 (35.9) | 365 (20.0) | 483 (22.4) | |
| Gender | 0.005 | |||
| Male | 56 (17.0) | 440 (24.1) | 496 (23.0) | |
| Female | 273 (83.0) | 1,384 (75.9) | 1,657 (77.0) | |
| Size | 0.000 | |||
| Mean (mm) | 22.0 ± 17.5 | 9.9 ± 8.2 | 11.7 ± 11.1 | |
| Range (mm) | 2.5–70.0 | 1.8–81.0 | 1.8–81.0 | |
| <10mm | 122 (37.1) | 1,238 (67.9) | 1,360 (63.2) | 0.000 |
| ≥10mm | 207 (62.9) | 586 (32.1) | 793 (36.8) | |
| Ultrasound Features | ||||
| Composition | 0.000 | |||
| Mixed cystic and solid | 116 (35.3) | 47 (2.6) | 163 (7.6) | |
| Solid or almost solid | 213 (64.7) | 1,777 (97.4) | 1,990 (92.4) | |
| Echogenicity | 0.000 | |||
| Isoechogenicity | 101 (30.7) | 17 (0.9) | 118 (5.5) | |
| Hyperechogenicity | 10 (3.0) | 0 (0.0) | 10 (0.5) | |
| Hypoechogenicity | 202 (61.4) | 1,260 (69.1) | 1,462 (67.9) | |
| Marked hypoechogenicity | 16 (4.9) | 547 (30.0) | 563 (26.1) | |
| Shape | 0.000 | |||
| Parallel | 256 (77.8) | 585 (32.1) | 841 (39.1) | |
| Nonparallel | 73 (22.2) | 1,239 (67.9) | 1,312 (60.9) | |
| Margin | 0.000 | |||
| Smooth | 163 (49.5) | 109 (6.0) | 272 (12.6) | |
| Ill-defined | 137 (41.6) | 816 (44.7) | 953 (44.3) | |
| Irregular or lobulated | 29 (8.9) | 899 (49.3) | 928 (43.1) | |
| Echogenic foci | 0.000 | |||
| No | 193 (58.7) | 660 (36.2) | 853 (39.6) | |
| Comet-tail | 22 (6.7) | 6 (0.3) | 28 (1.3) | |
| Macrocalcifications | 45 (13.7) | 72 (3.9) | 117 (5.4) | |
| Peripheral calcifications | 6 (1.8) | 4 (0.2) | 10 (0.5) | |
| Punctate echogenic foci | 63 (19.1) | 1,082 (59.4) | 1,145 (53.2) | |
Data in parentheses are percentages.