title: Spindle-cell squamous carcinoma of head and neck region: a clinicopathologic and immunohistochemical study of eight cases.
abstract: Spindle cell squamous carcinoma is a highly malignant neoplasm, characterized by a biphasic appearance, due to the presence of a diffuse proliferative pattern of pleomorphic spindle cells with extremely rare foci of conventional squamous cell carcinoma. Epithelial markers in eight cases of spindle-cell squamous carcinoma of the head and neck region were studied by immunocytochemistry. Epithelial membrane antigen and cytokeratin resulted strongly positive in the spindle cells of the sarcoma-like areas demonstrating the epithelial nature of the neoplasm. In 6 of our patients who later died from widespread metastases, the neoplasm had poor prognosis with a mean survival rate of 14.7 months.
mesh_terms: D000951:Antigens, Neoplasm / Q000032:analysis; D002294:Carcinoma, Squamous Cell / Q000276:immunology / Q000378:metabolism / Q000473:pathology*; D004848:Epithelium / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D006258:Head and Neck Neoplasms / Q000276:immunology / Q000378:metabolism / Q000473:pathology*; D006651:Histocytochemistry; D006801:Humans; D007124:Immunoenzyme Techniques; D007633:Keratins / Q000378:metabolism; D008565:Membrane Proteins / Q000032:analysis; D018396:Mucin-1
chemical_list: D000951:Antigens, Neoplasm; D008565:Membrane Proteins; D018396:Mucin-1; D007633:Keratins