An epidermal papilloma of the Atlantic salmon I: Epizootiology, pathology and immunology

• Published in: Journal of Wildlife Diseases
• Main Authors: Carlisle, J. C., Roberts, R. J.
• Format: Report
• Language: unknown
• Published: 1977
• Subjects: fish; skin; Atlantic salmon; Salmo salar
• Online Access: http://repository.cshl.edu/id/eprint/38993/; https://www.ncbi.nlm.nih.gov/pubmed/916133; https://doi.org/10.7589/0090-3558-13.3.230

Papillomatosis of Atlantic Salmon (Salmo salar) was studied with regard to epizootiology, gross and histologic pathology, and host response. It was found to be a condition of parr in their second summer, but also occasionally of young adult fish (smolts and grilse) which have adapted to salt water. The lesion was plaque-like to papillomatous and consisted of stratified squamous epithelium with supporting stroma. Immunologic findings tended to support histologic observations that the lesion was ultimately sloughed as a result of a cell mediate immune response.