Jankovic, S. (7101906308)S. (7101906308)JankovicMarinkovic, J. (7004611210)J. (7004611210)MarinkovicRadovanovic, Z. (7005270902)Z. (7005270902)Radovanovic2025-06-122025-06-121988https://doi.org/10.1159/000473396https://www.scopus.com/inward/record.uri?eid=2-s2.0-0024242594&doi=10.1159%2f000473396&partnerID=40&md5=c4584dcd3d76ea9524f156eb2666d8b4https://remedy.med.bg.ac.rs/handle/123456789/1932Sixty rural patients with upper urothelial tumors (UUT) have been followed for 10-14 years after they underwent surgery. Residential history revealed that 21 of them spent at least 20 years in an area where the Balkan nephropathy (BN) was endemic. These patients experienced a better survival than those who had not been exposed in BN foci. An opposite finding of the only author who previously tried to quantify survival in the same region by a similar approach was explained by two main reasons: his failure to control a considerable age difference between the two groups, and a restriction of his analysis only to the early stages of the tumors.