[Epidemiology and theories of the origin of hypospadias].

The increase in the prevalence of hypospadias, which has lasted for several decades, signals the need to find ways to prevent the disease. Development of measures aimed to reduce morbidity is impossible without a unified concept of the etiology and pathogenesis of hypospadias. The article analyzes the existing theories of the origin of hypospadias. According to the literature, there are 5 types of causes of hypospadias, some of which are currently established. Among the causes under investigation, the emphasis is on placental factors.