Cover Journal of the American Veterinary Medical Association
Journal of the American Veterinary Medical Association
ISSN:
0003-1488
Publication Date:
01 Oct 2017

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Treatment of urethral obstruction secondary to caudal bladder displacement, trigonal invagination, and urethral kinking in a dog

Kayo Kanakubo BVSc1, Carrie A. Palm DVM2, Amber L. Korner DVM3, and William T. N. Culp VMD4
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  • 1 Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616.
  • | 2 Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616.
  • | 3 Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616.
  • | 4 Department of Veterinary Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616.
DOI:
https://doi.org/10.2460/javma.251.7.818
Volume/Issue:
Volume 251: Issue 7
Online Publication Date:
01 Oct 2017
Restricted access
Reprints and Permissions Purchase Article

Abstract

CASE DESCRIPTION A 15-year-old spayed female mixed-breed dog was evaluated for a 7-week history of stranguria, pollakiuria, and intermittent urethral obstruction.

CLINICAL FINDINGS On initial evaluation, the patient had persistent stranguria with lack of urine production; after multiple unsuccessful attempts to urinate, a large volume of urine was produced. Prior to voiding the large volume, the urinary bladder was not palpable during examination. Abdominal ultrasonography confirmed caudal displacement of the urinary bladder, and the urethra and trigone could not be located ultrasonographically. Positive-contrast cystourethrography and CT confirmed caudal displacement of the urinary bladder and also revealed trigonal invagination and urethral kinking; dysuria was attributed to these findings.

TREATMENT AND OUTCOME Surgical repositioning of the lower urinary tract was performed. The urinary bladder was moved cranially and was fixed in place along the left lateral aspect of the body wall by cystopexy. After surgery, positive-contrast cystourethrography revealed a more cranial positioning of the urinary bladder and straightening of the urethra with no urethral kinking or trigonal invagination. Immediately after surgery, stranguria had resolved and the patient was able to void normally. Two years after surgery, the dog was reported to be urinating normally.

CLINICAL RELEVANCE Surgical correction of caudal urinary bladder displacement with cystopexy led to resolution of trigonal invagination, urethral kinking, and urethral obstruction in the dog of the present report. Trigonal invagination and urethral kinking, although uncommon findings, should be considered as possible causes of dysuria in dogs.

Abstract

CASE DESCRIPTION A 15-year-old spayed female mixed-breed dog was evaluated for a 7-week history of stranguria, pollakiuria, and intermittent urethral obstruction.

CLINICAL FINDINGS On initial evaluation, the patient had persistent stranguria with lack of urine production; after multiple unsuccessful attempts to urinate, a large volume of urine was produced. Prior to voiding the large volume, the urinary bladder was not palpable during examination. Abdominal ultrasonography confirmed caudal displacement of the urinary bladder, and the urethra and trigone could not be located ultrasonographically. Positive-contrast cystourethrography and CT confirmed caudal displacement of the urinary bladder and also revealed trigonal invagination and urethral kinking; dysuria was attributed to these findings.

TREATMENT AND OUTCOME Surgical repositioning of the lower urinary tract was performed. The urinary bladder was moved cranially and was fixed in place along the left lateral aspect of the body wall by cystopexy. After surgery, positive-contrast cystourethrography revealed a more cranial positioning of the urinary bladder and straightening of the urethra with no urethral kinking or trigonal invagination. Immediately after surgery, stranguria had resolved and the patient was able to void normally. Two years after surgery, the dog was reported to be urinating normally.

CLINICAL RELEVANCE Surgical correction of caudal urinary bladder displacement with cystopexy led to resolution of trigonal invagination, urethral kinking, and urethral obstruction in the dog of the present report. Trigonal invagination and urethral kinking, although uncommon findings, should be considered as possible causes of dysuria in dogs.

Contributor Notes

Dr. Korner's present address is Southern California Veterinary Specialty Hospital, Irvine, CA 92614.

Address correspondence to Dr. Palm (cpalm@ucdavis.edu).