Klinefelter Syndrome XXYY: Causes, Symptoms, and Treatment
1. Introduction The 48,XXYY syndrome is a rare sex chromosome aneuploidy characterized by the presence of one extra X chromosome and one extra Y chromosome in a male. Historically grouped as a variant of Klinefelter syndrome due to the shared manifestation of hypogonadism, modern medical science now recognizes XXYY as a distinct clinical entity with … Read more