Calcium Pyrophosphate Crystals in a Child With Wilson Disease: An Ominous Sign or Incidental Finding?

ABSTRACT

Calcium pyrophosphate dihydrate (CPPD) crystal deposition may cause acute arthritis (pseudogout), cartilage degeneration identified radiographically as chondrocalcinosis (CC), and other chronic degenerative joint changes in patients aged > 60 years. The few reported cases of CPPD disease in younger patients have been associated with underlying genetic or metabolic conditions.1,2.