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Medical treatment of the subfertile male.

Specific and effective medical treatment is available for some subfertile males. Reproductive physiology should be reviewed with all patients and exposure to drugs and toxins known to impair testicular or accessory sex gland function should be terminated. Appropriate treatment of retrograde ejaculation, chronic infections of the genital tract, or gonadotropin deficiency is indicated. Accurate diagnosis and treatment of the impotent patient may restore potency and fertility. Pregnancies have been achieved in association with each of the empirical regimens; however, we believe that each must be viewed as experimental at this time, since results may be no better than those observed in the absence of treatment. It is our experience that patients with elevated serum levels of FSH, peritubular fibrosis, and hyalinization are unlikely to achieve fertility regardless of treatment; however, there are exceptions. As our knowledge of basic reproductive biology and clinical pathology increases, it is hoped that better guidelines and more rational and effective medical treatment for the subfertile male will evolve.