http://mynotes4usmle.tumblr.com/post/44710061423/gout-vs-pseudogout
P seudogout
- >50yo
- Deposition of calcium P yrophosphate crystals.
- Joint aspiration: P ostive birefringent, Polygonal (romboid shaped or rectangular) crystals.
- Knee is the most involved.
- Associated with: hypothyroidism, DM, ochronosis
- Mimic osteoarthritis, RA
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