[Histologic study of 3 cases of so-called tubular adenoma of the testis]

Three cases of so called tubular adenoma in cryptorchid subjects are reported. The histological findings were tubules with a particularly small diameter containing Sertoli cells (similar to the precursor type). No elastic fibres were present in the basement membrane giving a picture similar to last term fetal and neonatal testicles. These findings are regarded as hypoplastic foci of tubules which have not developed. The relationship between Pick's adenoma and malignant Sertoli cells neoplasia is also discussed.