title: Ultrastructure of endometrial stromal sarcoma.
abstract: An endometrial stromal sarcoma from a 48-year-old woman was studied by light and electron microscopy. Ultrastructurally most of the tumor cells resembled the stromal cells of midproliferative endometrium. There was no evidence of a pericytic differentiation of the tumor cells. These findings lend further support to the concept of an endometrial histogenesis of stromal sarcoma.
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure; D002923:Cilia / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005260:Female; D006056:Golgi Apparatus / Q000648:ultrastructure; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D009362:Neoplasm Metastasis; D012509:Sarcoma / Q000473:pathology*; D014594:Uterine Neoplasms / Q000473:pathology*