ESPE Yearbook of Paediatric Endocrinology

Brief Summary: This longitudinal study provides an in-depth analysis of the clinical, endocrine, and testicular ultrasound (US) patterns in Klinefelter Syndrome (KS) from infancy through puberty and into adulthood, highlighting the progression of testicular degeneration in these patients.In this study, 155 KS patients with the classical 47,XXY karyotype, aged 7 months to 55 years, were prospectively evaluated at a single referral center following a stand...