输尿管异位，雌性英国斗牛犬

Fluoroscopic images of retrograde vaginocystourethrography demonstrating left renomegaly, left ureteromegaly, and left ectopic ureter in a female English Bulldog with urinary incontinence. On the lateral view, the dilated left ectopic ureter is dorsal to the urethra and becomes confluent with the urethra caudal to the urinary bladder. The right renal pelvis and ureter are normal. EU, ectopic ureter joining urethra; UB, urinary bladder; Va, vagina; Ve: vestibule.