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Diagnostic ultrasound ( PDFDrive )

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462 PART II Abdominal and Pelvic Sonography

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FIG. 12.35 Nutcracker Syndrome. Female, 17 years old, with left abdominal pain. (A) Transverse ultrasound image in the abdomen shows

an enlarged left renal vein (LRV) (blue arrow) just before it crosses between the superior mesenteric artery (SMA) and aorta (red arrows). The LRV

is narrowed and barely visible (blue short arrows) anterior to the right renal artery (pink arrow). (B) Duplex image of LRV shows slow low in the

dilated portion of the vein. (C) Duplex of the stenotic portion of the vein shows increased low velocity of 210 cm/sec. (D) Sagittal reformatted

computed tomography angiography shows that the LRV looks like a slit (green arrow) where it crosses between the aorta and the SMA. (E) Sagittal

reformatted images after stent placement shows that the anterior-posterior diameter of the LRV is improved (green arrow). (F) Transverse gray-scale

image shows the stent in the LRV. (G) Color duplex shows uniform low in the stent. Spectral Doppler (not shown) demonstrated normal velocities

throughout.

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