[Tenesmus and stranguria in a heifer caused by a urachal cyst in the bladder wall].

A 10-month-old Brown Swiss heifer was referred to our clinic be- cause of pollakiuria, stranguria and tenesmus. Ultrasonography and endoscopy revealed a cyst-like lesion at the apex of the urinary bladder. The apex of the bladder was surgically removed with the patient in dorsal recumbency under general anaesthesia. Histological examination revealed a cyst lined with urothelium in the wall of the urinary bladder. The heifer was discharged 9 days after surgery. According to the owner's information the animal did not show any clinical signs 6 months later.