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Diagnostic ultrasound ( PDFDrive )

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CHAPTER 18 Organ Transplantation 657

A

B

C

FIG. 18.39 Mimicker of Emphysematous Pyelonephritis. (A)

Emphysematous pyelonephritis. Transverse scan shows air in

collecting system (arrow). (B) Milk of calcium cyst. Supine

sonogram shows layering of the calciication (arrowheads) in the

cyst, producing dirty shadowing. (C) Scanning this patient in a

decubitus position changes the orientation of the layering of

calcium to the most dependent portion of the cyst, allowing for

differentiation from an air-illed collection.

A B C

FIG. 18.40 Renal Artery Thrombosis. (A) Sagittal sonogram shows normal gray-scale ultrasound on postoperative day 1. (B) However, power

Doppler shows no low in the lower pole because of thrombosis of a segmental artery. (C) Three months later, there is secondary scarring of the

entire lower pole (arrow).

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