A Case of Klinefelter’s Syndrome with Bilateral Absence of the Vas Deferens

A 33-year-old male presented to the Chiba University Hospital with the main complaint of right flank pain. Bilateral vas deferens were not palpable. Hormonal examination revealed hypergonadotropic hypogonadism and cytogenetic studies a 47, XXY karyotype. The significance of the association of this karyotype with the absence of vas deferens is discussed.