[Kidney cancer morbidity in a population group under continuous observation in dispensary care]

Information on kidney carcinoma case rate among a contingent kept under continuous observation and subjected to regular medical examination is discussed. The authors had 390 cases under observation which allowed them to estimate the case rate according to the patients' sex and age group. A 5.8-fold increase of the case rate in a period of 15 years was found. In males it increased from 0.31:1000 to 1.8:1000, and was highest in the 50-59-year age group. Among females the kidney carcinoma case rate increased 2.5-fold in 15 years; it was highest among females aged over 70 (3.20:1000) and was 2.6 times higher than the case rate in the 50-59-year age group and 4.5 times higher than that in the 40-49-year age group (0.32:1000 and 1.44:1000, respectively). Kidney carcinoma takes a steady 6th place in the morbidity structure. Ultrasonic diagnosis of kidney carcinoma is the most effective method. The authors point out that study of the case rate of malignant kidney tumors is very important for elaborating the volumes of examination.