Table 1 Bethesda categories for thyroid cytology.

From: ELTIRADS framework for thyroid nodule classification integrating elastography, TIRADS, and radiomics with interpretable machine learning

Category

ROM (%)

I: Nondiagnostic

-

II: Benign

< 3

III: Atypia of Undetermined Significance or Follicular Lesion of Undetermined Significance

10–30

IV: Follicular Neoplasm or Suspicious for Follicular Neoplasm

25–40

V: Suspicious for Malignancy

50–75

VI: Malignant

97–99

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