The retrograde urethrogram is one of the few diagnostic tests without a fancy CT or advanced diagnostic imaging replacement. Typically, the trauma professional calls the radiologist to perform this test. But it’s so easy, really, anyone could do it!
One of the hallmarks of urethral injury is blood at the meatus in males. The standard answer to the question “how do you evaluate for it?” is “retrograde urethrogram.” Unfortunately, too few people know how to perform this test, and not even all radiologists are familiar with it. Many times it falls to the urologist, who may not be immediately available.
Now, there is an actual instrument for this. It looks like an instrument of torture, with metal prongs to grasp the penis, a screw-down mechanism that inserts a tip into the meatus, and a connector for injecting the contrast. I actually found one of these in an unused drawer in the back of a fluoroscopy room!

I’ve come up with a much simpler technique. It’s a variation on the standard technique using easily to find equipment. The following items are needed:
- A urine specimen cup
- A tube of KY jelly (not the little unit dose packs)
- A bottle of renografin or ultravist contrast
- A 50-60 cc Toomey syringe (slip-tip)
- A fluoroscopy suite
Pour 25cc of contrast and 25cc of KY jelly in the specimen cup, cap it and shake well. Draw the contrast jelly up into the syringe. Under fluoro, insert the tip of the syringe into the penis and pull the penis toward yourself, patient left or right, pinching the meatus around the tip of the syringe. This maneuver takes the contrast image away from the midline where it may interfere with imaging the more proximal urethra. Slowly inject all the contrast, watching the contrast column on the fluoro screen. Once there is easy flow into the bladder, you can stop the study. If you see extravasation into the soft tissues at any time, stop the study immediately and call Urology.
The advantages to using this technique are:
- The contrast/jelly mix creates a thicker contrast gel that is less likely to leak from the meatus when injected
- The jelly makes it easy to insert the catheter if no urethral injury is detected or if the lesion is incomplete and the urologist wants to insert a catheter
Normal urethrogram: see how pulling the penis to the side yields a clear image.
Abnormal urethrogram: see the irregular puff of contrast extravasating into the soft tissues, but some urethral continuity allowing contrast to get to the bladder.


