The Balkan endemic nephropathy and urinary tract tumors.

Topographical distribution of the Balkan endemic nephropathy and tumors of urinary organs was investigated in the most affected region -- Central Serbia (Yugoslavia). The data expose that there is an association of endemic nephropathy and tumors of the pelvis and ureters, but not of the bladder. Disagreement related to the kind and degree of correlation of endemic nephropathy and tumors of the urinary organs is explained by insufficient knowledge of the problem rather than by influence of different ecological factors.