Cistectomia Total Associada à Ureterostomia Cutânea Bilateral como Alternativa Cirúrgica em Cão com Carcinoma de Células Transicionais: Relato de Caso

Abstract

This study aims to report the clinical case of a female dog with invasive urinary bladder neoplasia, submitted to cystectomy followed by cutaneous ureterostomy as a method of urinary diversion. Bladder carcinoma is one of the most frequent neoplasms affecting the urinary tract of dogs and cats, with a multifactorial etiology. Predisposing factors reported in the literature include exposure to toxic substances, antiparasitic baths, obesity, among others. When the bladder loses its functionality, surgical techniques are required to redirect urine to a new elimination route. In this context, procedures such as cystectomy associated with cutaneous ureterostomy have proven to be effective, with high therapeutic success rates. The case described involves a nine-year-old female dog with a history of dysuria, whose ultrasonographic examination revealed neoplastic infiltration and bilateral hydronephrosis. The patient underwent exploratory laparotomy, which revealed a bladder tumor, leading to total cystectomy and bilateral cutaneous ureterostomy. The excised tissue was sent for histopathological analysis, confirming the diagnosis of transitional cell carcinoma (TCC). Postoperative care included appropriate wound hygiene and administration of prescribed medications. Currently, the patient is in good clinical condition, demonstrating a positive response to treatment. This report highlights the importance of surgical intervention as a viable alternative in cases of invasive bladder tumors in small animals.