Table 1.
Participant demographic characteristics and malignant nodule types.
| Patients n= 92 | Benign n= 57 (62) | Malignant n= 35 (38) |
|---|---|---|
| Gender | ||
| Female a | 47 (82) | 27 (77) |
| Male | 10 (18) | 8 (23) |
| Age (y) b | 55.9 ± 15.2 | 42.7 ± 13.6 |
| Nodule size b (mm), largest dimension | 21.75 ± 12.50 | 19.97 ± 13.12 |
| Ultrasound features | ||
| Echogenicity | ||
| Hypoechoic | 35 (62) | 30 (86) |
| Isoechoic | 19 (33) | 5 (14) |
| Hyperechoic | 3 (5) | 0 (0) |
| Composition | ||
| Solid | 44 (77) | 32 (91) |
| Mixed and spongiform | 13 (23) | 3 (9) |
| Shape | ||
| Taller than wide | 10 (18) | 9 (26) |
| Margin | ||
| Ill-defined, irregular margin | 24 (42) | 23 (66) |
| Smooth margin | 33 (58) | 12 (34) |
| Calcification | ||
| Peripheral or rim microcalcification | 3 (5) | 5 (14) |
| Macrocalcification | 7 (12) | 9 (26) |
| No calcification | 47 (83) | 21 (60) |
| Hypervascularity | 38 (67) | 22 (63) |
| TI-RAD Scores | ||
| 2 | 3 (5) | 1 (3) |
| 3 | 8 (14) | 0 (0) |
| 4 | 27 (47) | 9 (26) |
| 5 | 16 (28) | 24 (69) |
| Not reported | 3 (5) | 1 (3) |
| Malignant nodule types | 35 (38) | |
| Papillary carcinoma | 31 (89) | |
| Medullary carcinoma | 3 (9) | |
| Anaplastic carcinoma | 1 (3) |
a Data are numbers of participants. b Values indicate mean ± standard deviation. Counts are presented with column percentages in parentheses.