Papillomavirus associated skin lesions in a cat seropositive for feline immunodeficiency virus.

A cat was presented with skin lesions consisting of slightly raised pigmented plaques, 2-7 mm in diameter with a rough slightly verrucous surface. Histologically these lesions were identified as papillomas. A papillomavirus infection was demonstrated: virus-like particles were present in the nuclei of cells within the lesions, and staining with an anti-bovine papillomavirus (BPV-1) antibody was obtained. An infection with feline immunodeficiency virus was diagnosed in this cat; this condition had probably enhanced the development of papillomas. This is the first report of a papillomavirus infection in a cat in Europe.