Chondrocalcinosis of the temporomandibular joint. A parotid pseudotumor.
Chondrocalcinosis, ie, calcium pyrophosphate dehydrate (CPPD) crystal deposition disease, has a spectrum of clinical manifestations ranging from an absence of symptoms to a severely destructive arthropathy. We recently treated a patient with CPPD deposition adjacent to the temporomandibular joint, which simulated a parotid tumor. The CPPD crystals are weakly positively birefringent under a polarizing microscope. Most frequently they are found roentgenographically as asymptomatic deposits in fibrocartilaginous structures, especially the knee meniscus. A less frequent manifestation is "pseudogout" acute arthritis. Rarely, joint destruction is found.
D002131:Calcium Pyrophosphate; D002805:Chondrocalcinosis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008854:Microscopy, Electron; D008875:Middle Aged; D012737:Sex Factors; D013704:Temporomandibular Joint; D014057:Tomography, X-Ray Computed
D002131:Calcium Pyrophosphate