<unk>  is a form of chronic interstitial nephritis that is endemic to limited areas of Bulgaria, the former Yugoslavia, and Romania. It is characterized by a progressive shrinking of the kidneys that is often associated with uroepithelial tumors. It was first identified in the 1920s among several small, discrete communities along the Danube River and its major tributaries, in the modern countries of Croatia, Bosnia, Serbia, Romania and Bulgaria. A striking feature of the disease is its very localized occurrence. There are approximately ten small areas where it occurs, all of them more or less rural, but nothing seems to connect those areas other than the occurrence of this illness.
Balkan nephropathy
IgA nephropathy
Mesoamerican nephropathy
Analgesic nephropathy
Focal segmental glomerulosclerosis
Membranous glomerulonephritis
Diabetic nephropathy
Phosphate nephropathy