The endocrine effects of an interstitial cell tumor of the testis are striking in a young boy in comparison to the effects of the same tumor in the adult male. In the child these tumors uniformly cause pseudoprecocious puberty. In the adult, probably because end organ effects are already maximal, little or no additional virilization is found.
Interstitial cell tumors of the testis are uncommon in children. W have been able to find a total of 32 cases reported with onset of symptoms under 10 years of age.1-35
It is the purpose of this paper to report the case of a 7-year-old boy with an interstitial cell tumor of the testis. The case is of interest because a comparison can be made of the effects of the tumor on the histology of testicular tissue adjacent to the tumor in contrast to that of the opposite testis. Also of interest