[Rescreening study of the population of the endemic village Gorno Peshtene, Vrachansk].

The number of the recorded patients with Balkan endemic nephropathy gradually decreased during the period after 1970. The author explains that by the interrupted prophylactic examinations and screenings of the population from the endemic villages during that period. The results obtained with the repeated screening, after 16 years, of the population of one hyperendemic village in Vratza district support that view point. New 74 patients with Balkan endemic nephropathy were found, 8 of them with uroepithelial tumours of the upper urinary pathways. Together with the 45 patients known so far, their total number amounts to 119, suggesting that 13,7 per cent of the population from that village has been affected by the disease. Those data convincingly suggest that the morbidity rate from Balkan endemic nephropathy in our country has not decreased - only its recording has been neglected, due to the interruption of the active search of those patients via screening of the population from the endemic settlements. That emphasizes the great importance of those investigation methods in the establishment of the real Balkan endemic nephropathy morbidity.