title: Microchip-associated fibrosarcoma in a cat.
abstract: A 9-year-old, neutered male cat was presented for a subcutaneous mass on the neck. After surgical removal of the mass, a pet identification microchip was found within the tumour. Histological examination of the mass revealed typical features of the feline postinjection sarcoma. The cat had never received injections at the tumour site; all routine vaccinations were administered in the hindlimbs. Few cases of sarcomas developing at the site of microchip application have been reported in animals, although the contributory role of vaccine administrations has not been ruled out. This is the first report of a microchip-associated fibrosarcoma in a cat. Adherence to American Association of Feline Practitioners vaccination guidelines, avoiding the interscapular area, enabled confirmation of the definitive aetiology of the neoplasia.
authors.affiliation: Department of Histopathology, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy. acarminato@izsvenezie.it
authors.forename: Antonio
authors.initials: A
authors.lastname: Carminato
authors.forename: Marta
authors.initials: M
authors.lastname: Vascellari
authors.forename: Wendy
authors.initials: W
authors.lastname: Marchioro
authors.forename: Erica
authors.initials: E
authors.lastname: Melchiotti
authors.forename: Franco
authors.initials: F
authors.lastname: Mutinelli
mesh_terms: D000823:Animal Identification Systems / Q000295:instrumentation / Q000662:veterinary*; D000818:Animals; D002371:Cat Diseases / Q000175:diagnosis / Q000209:etiology*; D002415:Cats; D005354:Fibrosarcoma / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary*; D006258:Head and Neck Neoplasms / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary*; D008297:Male; D019736:Prostheses and Implants / Q000009:adverse effects / Q000662:veterinary*