[Epidemiology of tumors of the testis in Indre-et-Loire from 1978 to 1987].
All the testicular tumors found among the inhabitants of the Indre-et-Loire department between 1978 and 1987 were reviewed. There was a total of 122 tumors, i.e. a direct standardised incidence rate of 4.55/100,000. The incidence increased over the years 1978-1982, with an abrupt decrease at 50% in 1983 and the increase since then has been minimal. There was an excessive morbidity rate of 22% for patients living in an urban environment. There was no preferential side for the tumor. The histological types of the tumors permit to distinguish three types of populations: non seminiferous germ cell tumors (51.3%) at the age of 30 years; seminoma (41.3%) at the age of 40 years and lymphoma (7.4%) at the age of 74 years. An indirect standardisation revealed an excessive rate of 22% for the socioprofessional category of employers and a rate of 28% for artisan, business men and company directors. The study confirms the known notions about the age and the histologic distribution of testicular tumors. The highest incidence rate of all the French departments, the drop in the rate of this growth curve in 1983 and the over representation of the employee category appear to be the most specific notions in the Indre-et-Loire department.