title: Squamous cell carcinoma with sarcoma-like stroma of the nose and paranasal sinuses: report of two cases.
abstract: Two cases of squamous cell carcinoma with sarcoma-like stroma of the nose and paranasal sinuses are described. To the best of our knowledge, this is the first report of such a localization for this tumour type. Keratin was localized by immunocytochemistry in the epithelial cells, as well as in occasional stromal-like elements. The importance of distinguishing these tumours from morphologically similar neoplasms is emphasized in view of their different therapeutic approach.
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000378:metabolism / Q000473:pathology*; D006651:Histocytochemistry; D006801:Humans; D007120:Immunochemistry; D007633:Keratins / Q000378:metabolism; D008297:Male; D009669:Nose Neoplasms / Q000378:metabolism / Q000473:pathology*; D010255:Paranasal Sinus Neoplasms / Q000378:metabolism / Q000473:pathology*; D012509:Sarcoma / Q000378:metabolism / Q000473:pathology*
chemical_list: D007633:Keratins