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Diagnostic ultrasound ( PDFDrive )

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700 PART III Small Parts, Carotid Artery, and Peripheral Vessel Sonography

A

B

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E

F

FIG. 19.13 Benign Follicular Adenoma: Spectrum of Appearances. Transverse images of (A) right lobe and (B) left lobe of thyroid gland in

two patients show homogeneous, hypoechoic, round to oval masses with a surrounding thin halo, the capsule of the adenoma. C, Carotid artery;

Tr, tracheal air shadow. (C) Longitudinal image shows oval hyperechoic lesion with thick peripheral halo. (D) Histology of lesion in (C). Note the

uniform capsule (arrow) of the mass. (E) Longitudinal image shows oval mass with internal cystic component. (F) Longitudinal image shows round,

hyperechoic homogeneous mass (arrow) in patient with Hashimoto thyroiditis.

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