1. Comparison of imaging methods
Comparison of imaging methods. Upper left is an example of a nonenhanced computed tomography (CT), and upper right is an ultrasound study in the demonstration of renal calcifications. Fine calcifications in the medullary region indicate medullary nephrocalcinosis. They are of high density on CT (arrows) and are shown as echogenic foci (arrows) on an ultrasound scan. Lower left and lower right: Example of images of a transitional cell carcinoma and the calcified renal cyst. Retrograde urogram (lower left) shows filling defects due to tumor in the renal pelvis (black arrow) at ureteropelvic junction, and also seen are the calcifications in a lower pole mass (white arrows). Note that the infundibulum and calices of the lower pole failed to opacify in this 45-year-old woman with hematuria. On the CT scan (lower right) the cystic nature of the calcified renal mass (curved arrow) is well demonstrated and the CT scan shows better the extent of the tumor (T), which involves the entire lower pole of the kidney and extends into the dilated renal pelvis.
Source: Chapter 6. Radiology of the Urinary Tract, Smith & Tanagho's General Urology, 18e
Citation: McAninch JW, Lue TF. Smith & Tanagho's General Urology, 18e; 2013 Available at: Accessed: October 07, 2017
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