Cystoscopy is the gold-standard diagnostic modality for ectopic ureter (EU) in dogs, with 100% sensitivity for identifying ureteral ectopia and the added advantage of allowing concurrent lower urinary tract evaluation and same-session treatment.Journal of the…
Abdominal ultrasonography is a reasonable first-line screening tool, with a diagnostic accuracy of 95% for EU detection, and it allows concurrent assessment of the upper urinary tract for hydroureter, hydronephrosis, renal hypoplasia, and renal aplasia.Journal of the… CT and cystoscopy have the highest agreement with surgical and necropsy findings for both detection and phenotypic characterization of EU.Journal of Vete… Retrograde contrast fluoroscopy performed concurrently with cystoscopy confirms intramural course and identifies stenotic ureteral orifices.Tieraerztliche…
Phenotypic characterization at diagnosis directly determines treatment eligibility. Intramural EU accounts for 87%–99% of canine ureteral ectopiaJournal of the… and is the only phenotype amenable to cystoscopic-guided laser ablation (CLA).Journal of Vete… Extramural EU requires open surgical correction. Concurrent urogenital anomalies — including pelvic bladder, short urethra, paramesonephric remnant, double vagina, and vaginal septum — are present in 81%–93% of EU cases and contribute substantially to persistent postoperative incontinence.Journal of the…
CLA is the treatment of choice for intramural EU in female dogs, combining retrograde uretero-cystography and cystoscopy to identify the distal ureteral orifice, followed by laser ablation of the medial wall of the intramural tunnel to relocate the ureteral orifice into the bladder trigone.Journal of Vete… The Holmium:YAG (Ho:YAG) laser is the instrument used for ablation.Tieraerztliche… The procedure is performed the same day as diagnosis and allows same-day discharge.Journal of the…
Continence outcomes after CLA in female dogs range from 25%–80% without additional therapy, increasing to 67.7%–81% with adjunctive medical or surgical management.Journal of the… In a direct comparison of CLA versus neoureterostomy, CLA was associated with fewer minor complications and fewer long-term recurrences of incontinence (P < .01 and P < .05, respectively).Veterinary Surg… Open surgical correction achieves continence in 22%–72% of dogs without adjunctive therapy, rising to 81% with medical management.Journal of Vete…
CLA is also effective in male dogs, though the procedure requires percutaneous perineal access for cystourethroscopy rather than retrograde cystoscopy.Journal of Vete… Of male dogs that were incontinent at diagnosis, 79% became continent after CLA alone, with an additional dog achieving continence with medication.Journal of Vete… Hydronephrosis improved on postoperative ultrasonography in 71% of affected kidneys, and hydroureter improved in 71% of affected ureters.Journal of Vete… Median follow-up in this cohort was 1,789 days.Journal of Vete…
CLA is effective for concurrent ureteroceles, resolving obstruction in 11 of 13 dogs; surgical conversion was required in 2 male dogs.Journal of Vete… Preoperative incontinence resolved in 8 of 9 affected dogs, and pollakiuria resolved in all 3 affected dogs.Journal of Vete… No postoperative complications were noted in this cohort.Journal of Vete…
The primary recognized complication of CLA is encrusted cystitis, reported following bilateral EU ablation and caused by Corynebacterium urealyticum infection at the trigone, with secondary ureteral obstruction and unilateral hydronephrosis.Journal of the… Management consists of cystoscopic debridement of plaques, urinary acidification, and long-term antibiotic therapy.Journal of the… Short-lived hematuria lasting less than 24 hours is an uncommon minor finding after CLA.Journal of the…
Persistent postoperative incontinence in female Golden Retrievers may be associated with a history of urinary tract infection, though the mechanism is not fully established.Journal of the… Distal ectopic ureteral termination (distal urethra or vestibule) has been associated with persistent incontinence in some series, though this finding is not consistent across all studies.Journal of the…
| Parameter | Female Dogs | Male Dogs |
|---|---|---|
| Continence without adjunctive therapy | 25%–80% Journal of Vete…+1 | 79% of initially incontinent dogs Journal of Vete… |
| Continence with adjunctive therapy | 67.7%–81% Journal of the… | Not separately reported Journal of Vete… |
| Surgical conversion required | Rare Journal of Vete… | 2/13 in ureterocele series Journal of Vete… |
| Hydronephrosis improvement post-CLA | Not quantified in sources | 71% of affected kidneys Journal of Vete… |
| Median follow-up (male cohort) | — | 1,789 days Journal of Vete… |
Would you like to discuss the workup and management of persistent incontinence after CLA — including which concurrent anomalies to address and what medical options are available?