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Diagnostic ultrasound ( PDFDrive )

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CHAPTER 20 The Parathyroid Glands 753

A

B

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E

F

FIG. 20.23 Percutaneous Needle Biopsy of Parathyroid Adenoma Prior to Reoperation. (A) Transverse sonogram shows needle tip within

a subcentimeter hypoechoic ectopic intrathyroid parathyroid adenoma (arrow) in a patient with persistent hyperparathyroidism. C, Common carotid

artery; T, thyroid. Tr, trachea. (B) Transverse sonogram in another patient with persistent hyperparathyroidism shows needle biopsy of an ectopic

inferior adenoma (arrow) located within the carotid sheath, posterior to the internal jugular vein (J). (C) Transverse sonogram in a patient with

recurrent hyperparathyroidism shows biopsy of recurrent hyperplastic parathyroid tissue (arrow) at the site of previous remote parathyroid resection

for multiple gland disease. (D) Transverse sonogram of a patient with hyperparathyroidism and prior subtotal thyroidectomy demonstrates hypoechoic

tissue in the right thyroid bed (arrow) between the trachea (Tr) and common carotid artery (C) indeterminate for residual thyroid versus parathyroid

tissue. (E) Longitudinal color Doppler low sonogram in the same patient demonstrates indeterminate hypervascular tissue in the right thyroid bed.

(F) Transverse sonogram in the same patient shows needle biopsy of the indeterminate tissue in the right thyroid bed (arrow) which conirmed

parathyroid adenoma when multimodality imaging was equivocal for thyroid versus parathyroid tissue. SM, Strap muscle. See also Video 20.18.

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