Table 1 Characteristics of the study population
From: Development of a clinical decision model for thyroid nodules
Patient Characteristics | No. | % |
|---|---|---|
Gender | Â | Â |
   Male | 46 | 21.3 |
   Female | 170 | 78.7 |
Patient age, years | mean ± SD = 47.1 ± 15.9 | |
   Median (range) | 47 (18 – 85) | |
Disease Characteristics | No. | % |
Serum TSH | mean ± SD = 2.6 ± 6.8 | |
Pre-operative thyroid status | Â | Â |
   Euthyroid | 174 | 80.6 |
   Hyperthyroid | 26 | 12 |
   Hypothyroid | 16 | 7.4 |
Dominant thyroid nodule size (cm) | mean ± SD = 2.8 ± 1.6 | |
Dominant thyroid nodule size | Â | Â |
<2 cm | 78 | 35.9 |
2 – 4 cm | 101 | 46.5 |
>4 cm | 38 | 17.5 |
Imaging Characteristics | No. | % |
Thyroid Scintigraphy | Â | Â |
Cold | 21 | 58.3 |
Warm | 3 | 8.3 |
Hot | 12 | 33.3 |
Thyroid Ultrasound | Â | Â |
Simple cyst | 4 | 1.9 |
Complex cyst | 8 | 3.7 |
Mixed | 32 | 14.8 |
Solid | 172 | 79.6 |
Thyroid EIS Level of Suspicion | Â | Â |
I: Definitely benign | 22 | 10.1 |
II: Highly unlikely to be malignant | 49 | 22.5 |
III: Unlikely to be malignant | 21 | 9.6 |
IV: Likely to be malignant | 64 | 29.5 |
V: Highly likely to be malignant | 62 | 28.4 |
Pathological Characteristics | No. | % |
Fine needle aspiration cytology | Â | Â |
Inadequate | 6 | 2.8 |
Not done | 9 | 4.2 |
Negative | 30 | 13.9 |
Positive | 62 | 28.7 |
Indeterminate | 109 | 50.4 |
Surgical Histopathology | Â | Â |
Benign | 106 | 49.1 |
Malignant | 110 | 50.9 |