当教室における3年間の男性不妊症の統計的観察

Abstract

A statistical analysis was made on 197 cases which had visited the Department of Urology, Osaka Medical College complaining of male infertility during the past three years from April 1972 to March 1975. The incidence of male infertility accounted for 5.0 per cent of all our male out-patients. The peak of the age distribution at the time of first visits was 30-34 years of age (average was 31.4 years old), and patients who had passed three years of a sterile period were the most numerous. No relation was found between male infertility and occupation, but past histories of genital diseases were somewhat related. Of 197 cases the cause of infertility existed on the male side in 76.2 per cent and on the female side in 7.9 per cent. The results of seminal analyses showed oligozoospermia 51.3 per cent, azoospermia 27.5 per cent, normospermia 10.6 per cent, asthenospermia 4.6 per cent and necrospermia 1.5 per cent. The size of the testes was found to be smaller in oligozoospermic and azoospermic patients. Histologically, hypospermatogenesis was frequent in the oligozoospermic patients and germinal cell aplasia was frequent in the azoospermic patients. The smaller was the testicular size, the more advanced was the testicular histological findings.