ABSTRACT
The authors analyzed 255 cases of occupational hypacusia reported as occupational diseases in 1962-1988 in the Czechoslovak uranium industry. Up to 1975 occupational hypacusias accounted for 9-11% of the nationwide number of hypacusia notified as occupational diseases. Due to extensive social provisions, incl. preventive ones, the incidence declined since 1985 below 1% of the nationwide incidence. The group of 255 men with occupational hypacusia was examined in detail at the Health Centre of the Uranium Industry in Príbam. Their age is 49.0 +/- 8.5 years, noise exposure 14.6 +/- 5.8 years, the the ratio of miners is 82.4%, the total percentage hearing loss is 63.5 +/- 11.4%, the mean annual increment of the total percentage hearing loss is 4.8 +/- 0.6%, the greatest mean annual increment is 5.4% in the occupation of miners.
Subject(s)
Hearing Loss, Noise-Induced , Mining , Occupational Diseases , Czechoslovakia/epidemiology , Hearing Loss, Noise-Induced/diagnosis , Hearing Loss, Noise-Induced/epidemiology , Humans , Male , Middle Aged , Occupational Diseases/diagnosis , Occupational Diseases/epidemiology , UraniumABSTRACT
The analysis of the clinical data of uranium miners suffering from lung cancer in the years 1976-1980 was made. In 299 diseased men with lung cancer verified by histology and/or cytology the average age was 56.2 years. There were 52.8% of epidermoid carcinomas, 32.8% of small cell carcinomas, 5% of adenocarcinomas, and 9.4% of other, mixed, undifferentiated carcinomas. This distribution differed from those reported previously. In 25 survivors of 5 years (8.4%), there were 21 patients radically operated in the Stage I or II of the disease. In 84% of survivors the cancer was epidermoid. The lung cancer in uranium miners has not any proper characteristics excluding the age of diseased persons which is about 10-15 years lower than in current male population suffering from lung cancer.
