Papillomas and squamous cell carcinomas of horses.

The research is a retrospective study analyzing the presence of papillomavirus in papillomas and squamous cell carcinomas in horses over a 13-year period. The study revealed that papillomavirus was present in several forms of papillomas but was not detected in squamous cell carcinomas.

Research Methodology

• The research is retrospective in nature, meaning it uses historical data gathered over a period of 13 years.
• The samples in the study constituted both papillomas and squamous cell carcinomas found in horses.
• The samples were tested for the presence of papillomavirus antigens using a technique known as the peroxidase-antiperoxidase method.

Findings and Locations of Papillomas and Squamous Cell Carcinomas

• The researchers found that the most common locations for papillomas were the penis and vulva, followed by the skin, eyes, and oral areas.
• Squamous cell carcinomas, on the other hand, were mostly located on the third eyelid and cornea, followed by the genital, oral, maxillary sinus, and skin locations.

Papillomavirus Presence

• The study detected the presence of papillomavirus structural antigens in 7 skin and 5 genital papillomas.
• Significantly, the study did not find papillomavirus in any of the squamous cell carcinomas examined.

Significance of the study

• The study provides important insights into the occurrence and nature of both papillomas and squamous cell carcinomas in horses.
• The findings suggest possible links between the presence of papillomaviruses and the development of certain forms of papillomas in horses.
• The absence of papillomavirus in squamous cell carcinomas could provide useful guidance in understanding and treating this form of cancer in horses.