Immunohistochemical study of cytokeratins in amyloid deposits associated with squamous cell carcinoma and dysplasia in the oral cavity, pharynx and larynx.

The frequency of amyloid deposits associated with squamous cell carcinoma (SCC) and dysplasia in the oral cavity, pharynx and larynx was examined. In addition, the origin of amyloid proteins by immunohistochemical staining with a panel of anticytokeratin monoclonal antibodies was investigated. Amyloid deposits were found in eight of 73 (11.