Table 3.
Comparison of each US feature of 1449 thyroid nodules according to underlying echogenicity
| |
Total |
Malignant |
Benign |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Heterogeneous echogenicity | Homogeneous echogenicity | P -value | Heterogeneous echogenicity | Homogeneous echogenicity | P -value | Heterogeneous echogenicity | Homogeneous echogenicity | P -value | |
| Total number |
317 |
1132 |
|
68 |
257 |
|
249 |
875 |
|
| Echogenicity |
|
|
0.078 |
|
|
0.174 |
|
|
0.068 |
| Hyper/isoechogenicity |
125 (39.4) |
525 (46.4) |
|
3 (4.4) |
28 (10.9) |
|
122 (49.0) |
497 (56.8) |
|
| Hypoechogenicity |
176 (55.5) |
549 (48.5) |
|
56 (82.4) |
186 (72.4) |
|
120 (48.2) |
363 (41.5) |
|
| Marked hypoechogenicity |
16 (5.1) |
58 (5.1) |
|
9 (13.2) |
43 (16.7) |
|
7 (2.8) |
15 (1.7) |
|
| Margin |
|
|
0.005 |
|
|
0.314 |
|
|
<0.001 |
| Well circumscribed |
203 (64.0) |
818 (72.3) |
|
12 (17.7) |
60 (23.4) |
|
191 (76.7) |
758 (86.6) |
|
| microlobulated or irregular |
114 (36.0) |
314 (27.7) |
|
56 (82.4) |
197 (76.7) |
|
58 (23.3) |
117 (13.4) |
|
| Calcifications |
|
|
0.849 |
|
|
0.986 |
|
|
0.555 |
| Microcalcifications |
42 (13.3) |
141 (12.5) |
|
29 (42.7) |
108 (42.0) |
|
13 (5.2) |
33 (3.8) |
|
| Macrocalcifications |
39 (12.3) |
151 (13.3) |
|
9 (13.2) |
36 (14.0) |
|
30 (12.1) |
115 (13.1) |
|
| No calcifications |
236 (74.5) |
840 (74.2) |
|
30 (44.1) |
113 (44.0) |
|
206 (82.7) |
727 (83.1) |
|
| Shape |
|
|
0.737 |
|
|
0.790 |
|
|
0.245 |
| Wider than tall |
251 (79.2) |
906 (80.0) |
|
29 (42.7) |
105 (40.9) |
|
222 (89.2) |
801 (91.5) |
|
| Taller than wide | 66 (20.8) | 226 (20.0) | 39 (57.4) | 152 (59.1) | 27 (10.8) | 74 (8.5) | |||