隐睾肿瘤发病率远较正常睾丸肿瘤为高,据Baker于1853年的统计,正常人发生睾丸肿瘤的发病率为0.0013％,而隐睾症者发生恶瘤变化的发病率为11％。此二数比较相差近万倍。其他文献亦有类似记载。约有8～15％的睾丸肿瘤发生在隐睾,但在成人隐睾的发病率很低,约0.3％左右。单侧隐睾的患者如发生肿瘤,绝大多数肿瘤发生于 The incidence of cryptorchidism is far higher than that of normal testicular tumors. According to Baker’s statistics in 1853, the incidence of testicular tumors in normal people was 0.0013%, while the incidence of malignant tumors in cryptorchidism was 11%. This difference between the number of nearly ten thousand times. Other documents have similar records. About 8 ~ 15% of testicular tumors occur in cryptorchidism, but the incidence of cryptorchidism in adults is very low, about 0.3%. Patients with unilateral cryptorchidism, such as the occurrence of tumors, the vast majority of tumors occur