Five patients with "chronic pyelonephritis," diagnosed on the basis of clinical, roentgenographic, and histologic data, in whom the disease was associated with a large protein excretion in the urine, are presented. Average 24 hour protein excretion was 3.0 to 7.7 gm.
Delano BG, Goodwin NJ, Thomson GE, Minkowitz S, Friedman EA. "Chronic Pyelonephritis" as a Cause of Massive Proteinuria (? Nephrotic Syndrome). Arch Intern Med. 1972;129(1):73–76. doi:10.1001/archinte.1972.00320010077008