title: Calcifying epithelial odontogenic tumour: a case showing features of malignancy.
abstract: A case of malignant calcifying epithelial odontogenic tumour is reported in a 75-year-old man. Evidence of local tissue invasion and lymph-node metastasis is presented. Immunoperoxidase studies of the neoplastic cells and tumour amyloid were negative for a variety of antigens, including the epithelial markers CEA and keratin. The histological and clinical findings are discussed.
mesh_terms: D000368:Aged; D002467:Cell Nucleus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D004848:Epithelium / Q000473:pathology; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D008339:Mandibular Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D009808:Odontogenic Tumors / Q000473:pathology* / Q000648:ultrastructure