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Case
Summary
Diagnosis: Calcium Pyrophosphate Deposition Disease
(CPPD)
Clinical hints:
CPDD (pseudogout) has a fairly acute onset and is commonest in
the knee. It may simulate gout. Birefringent calcium
pyrophosphate crystals are seen under fluorescent microscopy.
Radiological Pearls:
- knee commonest joint involved
- chondrocalcinosis
- peri-articular cystic erosions
- joint space loss
Films were kindly provided by Dr. G. Cooke.
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