Bladder Stones Quiz

April 14, 2017

Pictured: Lateral radiograph of the back end of a 5-year-old male Labrador with a history of bladder stones.


  1. What’s your diagnosis?
  2. What would you do next?

Check your answers on the next page.


  1. If you thought that this dog had a urethral stone, well… you kinda should have thought of question #2.
  2. The correct answer to question # 1 should have been “I can’t answer until we get an orthogonal view,” i.e. a VD view. This would have revealed that the “urethral stone” is completely off center. It’s superimposed with the left thigh, so it cannot be in the urethra. It turned out to be a calcified “skin tag.”
  3. Morale of the story: “There is no such thing as one view.”

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