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Veterinary Radiology

Teaching and learning about veterinary diagnostic imaging.

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7 month old Miniature Schnauzer

August 10, 2015 By Allison Zwingenberger

Today’s case is a 7 month old Miniature Schnauzer with history of straining to urinate after trauma to the ventral abdomen. Post your comments below!

R LAT Abdomen
R LAT Abdomen
R LAT Abdomen
R LAT Abdomen

Show findings...

Findings

There are no abnormalities involving the abdomen or urinary tract on the precontrast lateral radiograph.
A contrast urethrogram was performed. A Foley catheter was placed in the distal urethra and the balloon inflated. Non-ionic contrast medium was injected, and several radiographs were taken during this procedure. There is a focal narrowing of the urethra 1 cm caudal to the os penis. This narrowed area is visible on both contrast projections.

Show diagnosis…

Diagnosis

  • Urethral stricture

Show discussion…

Discussion

Urethral strictures may form secondary to trauma or lodged calcluli. The normal urethra narrows through the pelvis, then widens slightly at the prostate gland. True narrowing or filling defects should be visible on multiple images. Air bubbles can mimic filling defects but will move to different locations in the urethra as contrast is injected. It’s important to take several radiographs as contrast is injected to differentiate between true lesions and artifacts.

Case originally posted on December 18, 2008

Filed Under: Abdomen, Canine, Case of the Day, Radiographs

Comments

  1. ringo says

    December 18, 2008 at 3:06 pm

    There is a filling defect in the bladder neck on the cystogram and in the urethra behind the os penis compatible with urethral stricture after trauma. The bladder defect could be due to blood clot or wall hypertrophy after trauma.

    Feaces are ventrally located in the colon. Perineal hernia?

  2. fall_of_legend2001 says

    August 18, 2015 at 1:23 am

    There is stenosis in the urethra just after the os penis

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