[XX-male syndrome from the andrologic viewpoint]

Three cases of XX-male Syndrome which have been evaluated at the Department for Andrology of the University-Hospital Hamburg are reported. The clinical, cytogenetical, histological and endocrinological features of this syndrome are described from an andrological point of view, including the evaluation of the spermatogram. As there are no typical clinical features for the XX-male syndrome, and the sex-chromatin is positive in Klinefelter's Syndrome also, it is necessary to use the chromosome-analysis for the diagnosis of this rare gonosomal aberration.