Diagnostic ultrasound ( PDFDrive )

CHAPTER 48 The Pediatric Head and Neck 1647
A
B
FIG. 48.32 Thyroid Degenerative (Colloid) Cyst. (A) Five-year-old with palpable mass demonstrates complex elliptical hypoechoic lesion with
internal echogenic foci in the left lobe of the thyroid proven to represent colloid cyst. On color Doppler (not shown), no internal low was present.
(B) Smaller hypoechoic lesions were noted in right lobe of thyroid, one demonstrating comet-tail artifact (arrow).
A
B
FIG. 48.33 Thyroid Hematoma. (A) Teenage girl was elbowed in the left side of the neck and developed a lump. Imaging of left lobe of
thyroid demonstrates heterogeneous, well-deined, round avascular lesion. (B) Axial computed tomography scan shows hematoma replacing most
of the left lobe.
A
B
FIG. 48.34 Thyroid Follicular Adenoma. (A) Round, well-deined, almost-isoechoic lesion in the left lobe of the thyroid demonstrates a
peripheral halo of decreased echogenicity. (B) Color Doppler sonogram demonstrates peripheral vascularity.