title: Sclerosing hemangioma of the lung: an ultrastructural study.
abstract: A well-circumscribed nodular mass was excised from the lingula of the left lung of a 40-year-old-female. The lesion was discovered on routine chest x-ray examination and corresponded to a typical "sclerosing hemangioma" described by Liebow and Hubbell. Electron microscopic study revealed unequivocal epithelial cells in both the irregular spaces and the solid areas of the tumor; some of these cells were identical to granular pneumonocytes. The true vascular component was sparsely distributed. We concluded that "sclerosing hemangioma" was a misnomer because we were dealing with an essentially epithelial lesion.
mesh_terms: D000328:Adult; D004727:Endothelium / Q000648:ultrastructure; D004848:Epithelium / Q000648:ultrastructure; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000209:etiology / Q000648:ultrastructure*; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009626:Terminology as Topic