Seminiferous tubule dysgenesis: rarely employed phrase for just about any dysfunction by which the seminiferous tubules exhibit an abnormal cytoarchitecture and extensive hyalinization; the testes are small, and handful of spermatozoa are formed; the plan habitus may properly be eunuchoid, and gynecomastia may properly be present; urinary gonadotropin output is on the basic time frame high, as well as the incidence of psychological deficiency and sickness increased; sex chromatin may properly be male or female, and androgen secretion ranges from subnormal to normal. It is for the most part a steady attribute of (and the phrase may properly be employed synonymously with) Klinefelter syndrome

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