Recently we encountered a male bearing a XX sex chromosome constitution. The patient is a 25-year-old unmarried male. He complained of loss of sexual potency. He is 154cm in height and 50Kg in weight. No gynecomastia was noted. There were no webbed neck and no cubitus valgus. The external genitalia appeared normal in size. A small testis measuring 2×1.5×1.5cm was felt in both scrotal sacs. An expl