title: Calcium pyrophosphate dihydrate crystal deposition in the sacroiliac joint.
mesh_terms: D000368:Aged; D002131:Calcium Pyrophosphate / Q000032:analysis*; D002805:Chondrocalcinosis / Q000473:pathology*; D011756:Diphosphates / Q000032:analysis*; D005260:Female; D006801:Humans; D012446:Sacroiliac Joint / Q000032:analysis / Q000473:pathology*
chemical_list: D011756:Diphosphates; D002131:Calcium Pyrophosphate