title: Ovarian dysgerminoma: an ultrastructural study.
abstract: A case of ovarian dysgerminoma, found in a 14-year-old girl, is described. The ultrastructural study showed three different types of cells-two kinds of tumor cells(the main tumor cells of the germ-cell type and the second type with deeply indented nuclei and scanty cytoplasm) and stromal cells. The tumor also showed a typical lymphocytic infiltration, and the cells appeared to be embedded in a matrix of collagen fibers and ground substance.
mesh_terms: D000293:Adolescent; D002467:Cell Nucleus / Q000648:ultrastructure; D004407:Dysgerminoma / Q000473:pathology*; D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D009940:Organoids / Q000648:ultrastructure; D010051:Ovarian Neoplasms / Q000473:pathology*; D010053:Ovary / Q000473:pathology / Q000648:ultrastructure*