Squamous cell carcinoma and suspect peripheral nerve sheath tumor in a 10-year-old Paint horse.

This study reports a case of a 10-year-old Paint horse diagnosed with a squamous cell carcinoma and a peripheral nerve sheath tumor on the right ear, which was then removed surgically.

Case Background

• The horse in the study, a 10-year-old, gelded Paint breed, presented with a 4 cm diameter round mass in the rostro-lateral (front and side) border of the right pinna (ear).
• Based on its location and preliminary histopathological (disease diagnosis using microscopic examination) findings, the mass was suspected to be a squamous cell carcinoma and a peripheral nerve sheath tumor.

Squamous Cell Carcinoma and Peripheral Nerve Sheath Tumor

• Squamous cell carcinoma is a type of skin cancer originating from the squamous cells, the epithelial cells forming the outer layer of the skin, and is typically characterized by the growth of abnormal cells.
• Peripheral nerve sheath tumor is a type of cancer that affects the peripheral nerves. It originates from the cells that form the protective layer (sheath) around the nerves that send signals from your brain to the rest of your body.
• Both conditions can be life-threatening if not treated timely and appropriately.

Treatment

• In order to prevent further development and spread of the tumors, the round mass was surgically removed, a procedure known as resection.
• The resection was performed at the base of the lateral (side) edge of the horse’s ear where the tumor was located.
• The use of surgical intervention is a common approach in managing such types of tumors and can significantly improve the prognosis of the disease.
• However, further studies are needed to monitor the horse’s recovery post-surgery and ensure there’s no recurrence of the tumor.