Vulvar calcinosis cutis in a female dog with urinary incontinence secondary to an ectopic ureter.

A 2-year-old, spayed female standard schnauzer dog was presented with a history of urinary incontinence and painful whitish lesions localized to the vulvar region. An ectopic ureter was diagnosed by cystoscopy. Histopathology of the biopsy specimens from the vulvar lesions was compatible with calcinosis cutis. Seven weeks following the cystoscopic laser ablation of the ectopic ureter and resolution of the urinary incontinence, the calcinosis cutis lesions completely resolved without any specific treatment. To the authors' knowledge, vulvar calcinosis cutis secondary to urinary incontinence has not been previously reported in a dog. Key clinical message: This is the first case report in the veterinary literature of vulvar calcinosis cutis in a female dog due to urinary incontinence.