Frequencies and malignancy rates of 6-tiered Bethesda categories of thyroid nodules according to ultrasound assessment and nodule size.

Frequencies and malignancy rates of 6-tiered Bethesda categories of thyroid nodules according to ultrasound assessment and nodule size.

Head Neck. 2018 Apr 23;:

Authors: Park VY, Lee HS, Kim EK, Kwak JY, Yoon JH, Moon HJ

Abstract
BACKGROUND: The malignancy risk of thyroid nodules differs according to Bethesda category, ultrasound features, and nodule size.
METHODS: In 2725 thyroid nodules that underwent ultrasound-guided fine-needle aspiration, frequencies and malignancy rates of Bethesda categories were compared according to size and ultrasound assessment.
RESULTS: When comparing the ultrasound suspicious nodules ≤10 mm and >10 mm, the frequency of the benign cytology was statistically higher in the >10 mm group, whereas the nondiagnostic and suspicious for malignancy cytology were higher in the ≤10 mm group. In ultrasound suspicious nodules ≤10 mm, the malignancy rate of the benign cytology group was higher but that of the suspicious for malignancy cytology group was lower than the >10 mm group.
CONCLUSION: Benign and suspicious for malignant cytological results are more reliable in thyroid nodules >10 mm compared to ≤10 mm displaying suspicious ultrasound features.

PMID: 29684254 [PubMed - as supplied by publisher]

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