[Diagnostic value of electron microscopy on epithelial tumors of the ovary]

The study on transmission electron microscopy (TEM) and scanning electron microscopy (SEM) in 52 cases of ovarian epithelial tumors (OET) was presented. The characteristic features of ultrastructure and cell surface structure of different types of OET, also the diagnostic features of cancer cells were determined and discussed. It has a great value in differentiation of histologic types of OET and in early diagnosis of cancer. In 3 cases of borderline malignant tumor, some malignant cells, which were impossible to distinguish by light microscopy, were discovered by TEM and SEM. The diagnostic value of electron microscopy in early malignancy of tumors is more important.