Tumoral calcium pyrophosphate dihydrate crystal deposition disease of the temporomandibular joint: identification on crystallography.
This paper reports a case of calcium pyrophosphate dihydrate (CPPD) crystal deposition in the temporomandibular joint (TMJ) of a 59-year-old man with the chief complaint of severe pain in the left TMJ. On CT a radiopaque area was seen around the condylar process of the left TMJ with irregular destructive bony changes. A provisional diagnosis of crystalline-induced arthritis was made on histopathology of a biopsy specimen. Electron probe microanalysis (EPMA), scanning electron microscopy (SEM) and X-ray diffraction showed both CPPD and hydroxyapatite (HA) in the crystalline materials. Identification of these two types of crystal in crystal deposition disease of TMJ, using crystallography, is discussed.
Department of Oral Pathology, School of Dentistry, Iwate Medical University, Uchimaru Morioka Iwate, Japan. toshi_m@sea.plala.or.jp
Toshinari
T
Mikami
Yasunori
Y
Takeda
Akinori
A
Ohira
Hideki
H
Hoshi
Yoshiki
Y
Sugiyama
Yasuo
Y
Yoshida
Junichi
J
Ambo
D002131:Calcium Pyrophosphate / Q000032:analysis*; D002805:Chondrocalcinosis / Q000000981:diagnostic imaging*; D003461:Crystallography / Q000379:methods*; D017886:Durapatite / Q000032:analysis; D004577:Electron Probe Microanalysis; D006801:Humans; D008297:Male; D008335:Mandibular Condyle / Q000378:metabolism / Q000473:pathology; D008855:Microscopy, Electron, Scanning; D008859:Microscopy, Polarization; D008875:Middle Aged; D013704:Temporomandibular Joint / Q000737:chemistry* / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014961:X-Ray Diffraction
D017886:Durapatite; D002131:Calcium Pyrophosphate