Dog with Transitional Cell Carcinoma

An 11-year old castrated male Labrador Retriever which had been diagnosed with transitional cell carcinoma of the prostate, urethra, and trigone four months prior to presentation was evaluated for the inability to urinate for 12 hours.  He had been managed with piroxicam and systemic carboplatin since diagnosis.  Retrograde catheterization was difficult and could only be accomplished using a red rubber with the patient heavily sedated.  Palliative urethral stenting was elected to relieve the urethral obstruction.
Based on the cystourethrogram, and measurements provided, what size urethral stent should be used?

A 12 mm x 80 mm nitinol uretral stent was placed. What happened during urethral stent placement to create the appearance of the urethral stent in the following image?

What, if anything, should be done with this patient’s stent?

A second urethral stent of the same diameter and shorter length was placed inside the first stent, and is shown below.  Post-stenting cystourethrogram is also below.

What is the incidence of severe post-urethral stenting incontinence? Does the patient’s sex or tumor location and extent affect this statistic?

Category: Cases, Genitourinary