单侧或双侧睾丸缺如发生率分别为0.2%或0.05%。而单侧缺如占隐睾患者的4%。本院1981～1993年收29例单侧睾丸缺如报告如下:一、病例:29例年龄为1 6/(12)～13岁。左侧26例, Unilateral or bilateral testicular absence rates were 0.2% or 0.05%. Unilateral absence of cryptococcal patients accounted for 4%. The hospital from 1981 to 1993 received 29 cases of unilateral testicular debridement as follows: First, the case: 29 cases were aged 6 / (12) to 13 years old. 26 cases on the left,