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You are here : 3-RX.com > Medical Encyclopedia > Diseases and Conditions > Klinefelter Syndrome: Diagnosis & Tests

Klinefelter Syndrome

Alternate Names : XXY Syndrome

Klinefelter Syndrome | Symptoms & Signs | Diagnosis & Tests | Prevention & Expectations | Treatment & Monitoring

How is the condition diagnosed?

Klinefelter syndrome usually is not obvious at birth, unless some of uncommon physical features are present. It may be suspected at puberty, when secondary sexual characteristics do not develop. The penis usually enlarges normally, but the testicles remain small and beard growth is sparse. In addition, breasts may enlarge at puberty. While measuring certain hormones is useful, chromosome analysis is the definitive diagnostic test.

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Klinefelter Syndrome: Symptoms & Signs


Klinefelter Syndrome: Prevention & Expectations

Author: Ronald J. Jorgenson, DDS, PhD, FACMG
Reviewer: Eileen McLaughlin, RN, BSN
Date Reviewed: 05/07/01

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