Table 4 The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) – according to Cibas and Ali [7].
| Diagnostic category | Risk of malignancy (%) | |
|---|---|---|
|
I II III IV V VI |
Nondiagnostic or unsatisfactory Benign Atypia of undetermined significance or follicular lesion of undetermined significance Follicular neoplasm or suspicious for a follicular neoplasm Suspicious for malignancy Malignant |
1-4 0-3 5-15 15-30 60-75 97-99 |