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A clinical observation was made on 77 cases of cryptorchidism who had been admitted Eul ji General Hospital in Seoul and Tae Jon, Korea, during the period from January, 1976 to June, 1984 The results were as follows 1. The cryptorchidism had the highest incidence rate among the anomalies of the genitourinary tract (47.8%) . 2. The age distribution was ranging from 3 years to 35 years and the most frequent age group 6 to 10 years old. 3. The bilateral cryptorchidisms were observed in 24 cases (31.2%) , of the unilateral 53 cases, right in 35 cases and left in 18 cases. 4. Among location of cryptorchidisms, the inguinal types were most frequent (56.5%) 5. Hormonal therapy was done on 12 cases of cryptorchidisms but 5 cases were respondent with partial descent and 1 case was responsive with complete descent. 6. Orchiopexy was performed on 92 testes, orchiectomy on 6 testes and 2 cases were confirmed as monoorchism on exploration. 7. On the histopathologic findings of testicular biopsy in 6 cases, there were immature seminiferous tubules, germ cell aplasia, basement membrane thickening and aspermatogenesis.
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