Urinary bladder duplication in coronal plane in a dog

Abstract

An 8‐year‐old female intact Yorkshire terrier was presented with a 1‐year recurrent urinary tract infection. Abdominal ultrasound, computed tomography, positive contrast retrograde urethrography and cystoscopy were performed, revealing a tubular structure continuous with the ventral wall of the bladder connected with the urethra by an ostium ventral to the internal urethral orifice. Excision of the tubular structure was performed. Histopathological results were consistent with urinary bladder tissue. One year after surgery no clinical signs were reported. To the authors’ knowledge, this is the first report of urinary bladder duplication in the coronal plane with a single urethra in a dog.