title: [Role of electron microscopy in determining the degree of differentiation and cell type in oat cell carcinoma of the lung].
abstract: Ultrastructurally, small cell carcinoma of lung may be classified as follows: Type I -- undifferentiated small cell carcinoma in which cells do not show any ultrastructural signs of organ- or tissue-specific differentiation. Type II -- differentiated small cell carcinoma consisting of two groups of cells: undifferentiated (without ultrastructural organ-or tissue-specific features) and differentiated (with ultrastructural organ-or tissue-specific features). Type II may occur in different modifications depending on the variety of differentiated cells, e. g. endocrine, mucous, alveolocytic, squamous-cell, mixed, etc. Histologically, small cell carcinoma of lung is represented by a heterogenous group of tumors. Application of electron microscopy provides an objective and reliable means of identification of type and stage of differentiation of cells of this carcinoma.
mesh_terms: D018288:Carcinoma, Small Cell / Q000145:classification / Q000648:ultrastructure*; D002471:Cell Transformation, Neoplastic / Q000145:classification / Q000648:ultrastructure*; D006801:Humans; D008175:Lung Neoplasms / Q000648:ultrastructure*; D008854:Microscopy, Electron
vernacular_title: Rol' élektronoi mikroskopii v opredelenii stepeni differntsirovki i tipa kletok melkokletochnogo raka legkogo.