Generalities in canine papillomavirus: systematic review of case reports

Abstract

Canine papillomavirus (CPV) is a common entity in dogs that can be transmitted by direct and indirect contact and cause lesions in various parts of the body. It is the main cause of benign tumors; however, if not detected in time, it is a risk factor for the development of squamous cell carcinoma, documented with high mortality. To clarify demographic generalities, location of lesions, and findings involved in CPV detection, a systematic review of case reports of CPV was performed. The PRISMA statement was followed. Literature was searched in PubMed, DOAJ, and CAB Abstracts from 2011 to date. The articles collected were tabulated in Excel with the variables of interest. A total of 54 articles were obtained from the search, and 11 were included in the review after the screening and selection process. The analysis of the information allowed us to identify that among the case reports there were 4 investigations with male dogs, 2 females and 5 unspecified. Age ranged from 2 to 12 years. The breed with more cases reported was the Labrador retriever and 6 reported cases with neutered patients. Regarding the location of the lesions, the most common was the oral cavity, and the main findings were the need to identify new subtypes of CPV, and the development of lesions at lower CD4 and CD8 lymphocyte counts. Further research, encouragement of veterinary medical personnel, and dissemination of CPVrelated literature are needed to make this pathology visible and initiate future public health actions.