Follitropin (FSH) Deficiency in an Infertile Male due to FSHβ Gene Mutation. A Syndrome of Normal Puberty and Virilization but Under-developed Testicles with Azoospermia, Low FSH but High Lutropin and Normal Serum Testosterone Concentrations

Abstract excerpt

We studied a man who sought medical attention at age 28 years because of infertility in both his first and second marriages. His sexual development appeared to have been normal, with normal puberty and virilization, and normal libido and sexual potency. At examination, his testicles were small and soft; otherwise he had a normal physical appearance. Evaluations revealed azoospermia, undetectable in serum before...

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