A 63-year-old man presents to the emergency room with severe pain and swelling in his right knee. The pain started suddenly, and there is no history of injury to the knee. On physical examination, the knee is warm, red, and swollen with decreased range of movement. A diagnostic aspiration of the knee is performed. Which of the following will most likely distinguish pseudo-gout from gout?
A 63-year-old man presents to the emergency room with severe pain and swelling in his right knee. The pain started suddenly, and there is no history of injury to the knee. On physical examination, the knee is warm, red, and swollen with decreased range of movement. A diagnostic aspiration of the knee is performed. Which of the following will most likely distinguish pseudo-gout from gout?
💡 Explanation
A 63-year-old man presents to the emergency room with severe pain and swelling in his right knee. The pain started suddenly, and there is no history of injury to the knee. On physical examination, the knee is warm, red, and swollen with decreased range of movement. A diagnostic aspiration of the knee is performed. Which of the following will most likely distinguish pseudo-gout from gout?
✓ Correct Answer: A. positive birefringent crystals
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