Table 2 Thyroid and nodule features in diagnostic and non-diagnostic thyroid FNA
Variable | Diagnostic (n = 139) | Non-diagnostic (n = 41) | p-value | |
|---|---|---|---|---|
Thyroid dimensions | Enlarged | 29% | 33% | 0.66 |
Not enlarged | 71% | 67% | ||
Palpable | 77% | 64% | 0.07 | |
Nodule size | Average | 23 mm (+/- 13 mm) | 19 mm (+/- 15 mm) | 0.25 |
>4 cm | 10% | 8% | 0.8 | |
<1 cm | 18% | 35% | 0.02 | |
Nodule location | Right | 56% | 49% | 0.38 |
Left | 44% | 51% | ||
Upper | 24% | 18% | 0.8 | |
Lower | 55% | 50% | 0.35 | |
Isthmus | 22% | 32% | 0.55 | |
Adverse features | Calcifications | 22% | 10% | 0.1 |
Hypervascularity | 49% | 35% | 0.14 | |
Hypoechoic | 15% | 10% | 0.59 | |
Components | Solid | 53% | 43% | 0.36 |
Cystic | 11% | 30% | 0.001 | |
Complex | 37% | 28% | 0.33 | |