Focal epithelial hyperplasia of the oral mucosa in two chimpanzees (Pan troglodytes)


  • Dr. William R. Glad,

    Corresponding author
    1. Kristiansand Zoo, Primate Section, Kristiansand, Norway
    • Kristiansand Zoo, Primate Section, N-4600 Kristiansand, Norway
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  • Jahn M. Nesland

    1. Department of Pathology, The Norwegian Radium Hospital and Research Institute, Oslo, Norway
    2. The Norwegian Cancer Society, Oslo, Norway
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Papillomas in the oral mucosa compatible with focal epithelial hyperplasia are reported in two chimpanzees. The lesions were studied by light and electron microscopy. Virus particles were not observed. The literature dealing with focal epithelial hyperplasia in humans and other animals is reviewed.