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Diagnostic ultrasound ( PDFDrive )

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

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FIG. 19.15 Papillary Thyroid Carcinoma: Spectrum of Appearances. (A) Longitudinal image demonstrates extremely hypoechoic solid nodule

without evidence of calciication. (B) Longitudinal image of the thyroid of a 6-year-old patient shows extensive diffuse microcalciications without

discrete mass. This is a very rare appearance and is more often encountered in children than adults. (C) Longitudinal and (D) transverse images

show hypoechoic nodules that contain echogenic foci caused by microcalciication. (E) Longitudinal image shows hypoechoic solid nodule with

thick, irregular halo and linear calciications at anterior margin (arrow). (F) Transverse image shows heterogeneous but isoechoic mass in the isthmus

(arrows) that contains microcalciications and has a thick, irregular halo. C, Carotid artery; Tr, tracheal air shadow.

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