Problems of Chronic Pyelonephritis

The small contracted kidney of chronic pyelonephritis remains one of the enigmas of medicine. Ever since it was fully reviewed in the classical paper by Soma Weiss and Parker in 1939, chronic pyelonephritis has become an increasingly popular diagnosis. As a patho- logical process its progress is often slow and insidious, and, while it frequently presents clinically as a recurrent or refractory urinary infection, patients are often first seen because of hypertension or proteinuria, or because