The defect of embryo development arises up after the 20th week of development. Born anorchia is investigation of violation of blood circulationof testicles with actual death of testicles of embryos. In a period after the 20th week of embryo development an urethra is already formed on a masculine type, but the normal forming of phallus and scrotum does not take place. For these patients a scrotum is underdeveloped, testicles are obsolete.
Phenotype and genotype is masculine. In a pubertal period the structure of skeleton is formed in default of the second sexual signs. Table of contents of testosterone in blood very low. In a pubertal period a level ofgonadotropins is in blood та excretion them with urine promoted.
After the offensive of pubertal period the substitute therapy by androgens is recommended.
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