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A Humerus Puzzle

Test your knowledge with the January 2018 Brain Teaser

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Radiograph of an 11 year old male Labrador.


  1. What’s your presumptive diagnosis?
  2. How would you confirm your suspicion?
  3. What else should you do?

2 thoughts on “A Humerus Puzzle

  1. Get a lateral x-ray view of the humerus. It appears to a fracture of the humerus. Evaluate possible soft tissue damage to nerves of the affected limb and damage to the lungs.

  2. There is a lytic area in the proximal humerus. Suspect that this is a pathologic fracture. Probably secondary to OSA or other neoplasm in this location, large breed dog, of this age. Biopsy to confirm. Radiograph thorax, assess regional LN for metastasis.

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