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Diagnostic ultrasound ( PDFDrive )

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114 PART II Abdominal and Pelvic Sonography

A

B

C

D

E

F

FIG. 4.48 Focal Nodular Hyperplasia (FNH) in Three Patients. Gray-scale equivalents (A, C, and E) of color Doppler images (B, D, and F).

(A) Virtually normal image only suggests an isoechoic and subtle mass. (B) Doppler image shows a stellate arterial pattern and conirms the

authenticity of the observation. (C) Fatty liver and focal hypoechoic region in the tip of segment 3. Fatty sparing was considered. (D) Doppler

features show a hypervascular mass with a stellate appearance, the classic inding in FNH. (E) Contour-altering mass in the right lobe of the liver.

(F) Doppler image again shows the central stellate vascularity suggesting FNH. This hypervascularity with stellate vasculature is usually readily

observed with conventional sonography in FNH.

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