In Klinefelter's syndrome, males commonly have:
A. Gynecomastia
B. Undeveloped testes
C. Tall height
D. All of the above
ANS: D
In Klinefelter's syndrome, patients present with the typical triad of small, firm testes; gynecomastia; and elevated urine gonadotropins. Variants of Klinefelter's may also result in increased height, diabetes mellitus, obesity, and decreased intelligence. Although testicles are not absent, their small size may lead to lack of recognition as the testes.
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