| Bethesda system 2017 |
|
|
|
| Nondiagnostic/unsatisfactory |
3–34 |
– |
All: 5–10%; Resected: 9–32% |
| Benign |
60–70 |
10 |
All: 0–3% |
| Atypia of undetermined significance or follicular lesion of undetermined significance |
1–22 |
– |
6–18% |
| Follicular neoplasm or suspicious for follicular neoplasm |
– |
– |
10–40% |
| Suspicious for malignancy |
1.0–6.3 |
– |
45–60% |
| Malignant |
2–16 |
– |
94–96% |
| Japanese reporting system 2019 (Kuma Hospital) |
| Unsatisfactory |
5.0–5.3 |
13.4 |
All: 5.6% |
| Cyst fluid |
5.2–6.5 |
3.0–10.8 |
All: 0.2–2.0%; Resected: 25.7% |
| Benign |
66.3–67.8 |
6.3–8.1 |
All: 1.2%; Resected: 13.7–25.0% |
| Undetermined significance |
2.2–3.9 |
16.5–25.8 |
All: 13.1%; Resected: 60.8–79.5% |
| Follicular neoplasm |
3.9–4.3 |
42.2–51.0 |
All: 11.4%; Resected: 22.3–26.2% |
| Suspicious for malignancy |
1.5–2.2 |
57.9–64.5 |
Resected: 95.8–98.8% |
| Malignant |
12.2–16.4 |
68.3–72.1 |
Resected: 99.2–99.3% |
