Leiomioma em vesícula urinária de cadela: relato de caso

Abstract

Leiomyomas are benign smooth muscle mesenchymal tumors, rarely described involving the urinary vesicle of dogs. In veterinary medicine there are reports of the tumor in several organs besides the bladder, among them: uterus, vagina, heart, stomach, descending colon, esophagus and nasal cavity. As in the various neoplasias that reach the lower urinary tract, the affected animals develop as hematuria, polaciuria, strangury or urinary incontinence as the main clinical signs. In some cases, bladder palpation can be perceived mass or thickening if the neoplasm is advanced enough, but the definitive diagnosis is achieved by jointly evaluating the clinical findings associated with complementary imaging tests (x-ray and ultrasound) and histopathological examination of a fragment of the tumor, which can be obtained through exploratory laparotomy or during tumor mass excision. The main differential diagnosis of leiomyoma is its malignant and metastatizing form: leiomyosarcoma. The most commonly used treatment is surgical removal, which in the vast majority of cases leads to a good prognosis depending on the location of the tumor in the organ. The greatest complications are recorded when there is impairment of the bladder trigone. The objective of the present study is to report a case of leiomyoma in the urinary vesicle of an 11-year-old Dachshund bitch.