Case of the Month January 2015, Page 4

Answer 3:

There has been progressive decline in the size of the right kidney, consistent with chronic failure.  The degree of retroperitoneal fibrosis is essentially stable.  Also note the presence of a left nephrostomy tube, possibly accounting for why the left kidney remains normal in size.

Question 4:

What is the differential diagnosis given these findings and what other findings would you look for to further differentiate them?

For a larger image, please click Renal Insufficiency 8 .

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