Abstract
Up to 55% of benign nodules are hypoechoic compared to thyroid parenchyma and benign nodules ≤1 cm are more likely to be hypoechoic than larger nodules. Hypoechogenicity alone is not a diagnostic sign of malignancy. Lesions with intermediate suspicion of malignancy (estimated risk 10–20%) presents as a hypoechoic solid nodule with smooth regular margin, but without microcalcifications, extrathyroidal extension, or “taller-than-wide” shape. FNAB is recommended at size ≥1 cm. To see: 3 cases, 14 pictures.
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References
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Halenka, M., Fryšák, Z. (2017). Lesions with Intermediate Suspicion of Malignancy. In: Atlas of Thyroid Ultrasonography. Springer, Cham. https://doi.org/10.1007/978-3-319-53759-7_13
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DOI: https://doi.org/10.1007/978-3-319-53759-7_13
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