Comparison of ultrasound findings of papillary thyroid carcinoma subtypes based on the 2022 WHO classification of thyroid neoplasms.

Although hypoechoic or markedly hypoechoic nodules, lobulated/irregular margins, the EU-TIRADS category 4-5, and the ACR-TIRADS category 5 nodules were more frequently detected in the infiltrative follicular subtype, the difference did not reach statistical significance, which was probably related to a relatively small sample size of the infiltrative follicular subtype.

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