Endocrine Abstracts

Background: Experimental studies on Klinefelter syndrome (KS) reported increased intratesticular testosterone (T) levels coexisting with reduced circulating levels. Abnormalities in testicular microcirculation have been claimed; however, no studies investigated in vivo testicular blood flow dynamics in humans with KS.Objective: To analyze the testicular microcirculation in KS by contrast-enhanced ultrasonography (CEUS) and correlate vascular par...