Uso da criocirurgia no tratamento do carcinoma de células escamosas nasal em equino: relato de caso

Abstract

Squamous Cell Carcinoma (SCC) is a malignant tumor of keratinocytes, originated in the stratified squamous epithelium. In horses, it is a common cutaneous neoplasm, with a preference for depigmented areas or regions with sparse hair, due to greater exposure to solar radiation. This study aimed to describe the use of cryosurgery in the treatment of SCC in a horse treated at the Veterinary University Hospital (HUV) of the Federal University of Paraíba (UFPB).A male horse, 18 years old, was admitted to the large animals clinic sector of HUV/UFPB, presenting a wound on the left nostril. The animal underwent anamnesis, clinical examinations, blood count, cytology, and histopathology. Once the diagnosis was confirmed, it was referred to the large animals surgery department, where surgical excision of the neoplasm was performed, followed by cryosurgery over the entire operated area. The patient remained hospitalized under intensive therapy, receiving anti-inflammatory drugs (Meloxican 3%, Dipirona 50%), sistemic antibiotics (Benzilpenicilina benzatina - 3.000.000 UI, Benzilpenicilina procaína - 1.500.000 UI, Benzilpenicilina potássica - 1.500.000 UI, Dihidroestreptomicina base (sulfato) - 1.250mg, Estreptomicina base (sulfato)- 1.250mg; Citrato de sódio - 150mg), analgesic (Butorfanol1%), along with appropriate food and water management. After 80 days, advanced healing of the surgical wound was observed, with no signs of recurrence, and clinical, laboratory, and general condition parameters were within normal ranges, making the animal eligible for medical discharge. It can be concluded that surgical treatment, combined with intensive care and cryosurgery, was effective in managing SCC, as no recurrence of clinical signs was observed.