The Study of Light and Electron Microscepic Changes in the Cells of the Seminiferous Tubules of the Cryptorchid

Abnormal germ cells in the lumens of the seminiferous tubules are present in the testis of the cryptorchism. Three cases among the eight cases of testicular biopsies in the cryptorchism showed abnormal germ cells. However, the patterns of carcinoma in situ(CIS) were not found. The characteristics of the abnormal germ cells are enlarged nuclei with prominent mucleoli and pale cytoplasm in the light microscope examinations. The ultrastructural features of these abnormal cells were different from the normal germ cells. The abnormal germ cells could be recognized with the light and electron microscopic examinations.