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Table 2 Correlation of FNA category to surgical pathology and overall malignancy rate for each category

From: Rates of thyroid malignancy by FNA diagnostic category

FNA category Surgical pathology (%) Malignancy rate (%)
PTC FTC MTC Other
Unsatisfactory 14.5 0.0 0.0 3.6 18.2
Benign 14.9 0.0 0.0 1.1 16.0
Abnormal 22.2 1.2 0.6 0.6 24.7
SFN 23.9 6.5 0.0 2.2 32.6
SFM 76.5 0.0 11.8 5.9 94.1
Malignant 100.0 0.0 0.0 0.0 100.0
  1. Values are expressed as percentages of all FNAs in each category. FNA – fine needle aspiration, SFN – Suspicious for Neoplasm, SFM – Suspicious for Malignancy.