EN
In canine pathology the most frequent torsions of the organs in abdominal cavity are gastric volvulus, spleen torsion, spermatic cord torsion, torsion of uterus and intestinal volvulus. There is a lack of any description of urinary bladder torsion in canine literature. The paper presents a case description of urinary bladder torsion in a 16-year-old German shepherd having chronic urinary bladder atony. The dog was admitted with symptoms of involuntary urination. Both clinical and additional examinations demonstrated leukocytosis, extrarenal uremia, and proteinuria. Because of the negative prognosis the dog was put to sleep and subjected to postmortem examinations. The anatomopathological examination showed axial torsion of the urinary bladder which hindered urine outflow.