title: Sonographic characterization of mixed crystal arthropathy due to monosodium urate and calcium pyrophosphate dihydrate: the triple-contour sign.
authors.forename: Angel
authors.initials: A
authors.lastname: Checa
authors.forename: Heidi
authors.initials: H
authors.lastname: Wong
authors.forename: William
authors.initials: W
authors.lastname: Chun
mesh_terms: D000369:Aged, 80 and over; D002131:Calcium Pyrophosphate / Q000032:analysis*; D006073:Gout / Q000000981:diagnostic imaging* / Q000378:metabolism*; D006801:Humans; D008297:Male; D014463:Ultrasonography / Q000379:methods*; D014527:Uric Acid / Q000032:analysis*; D014955:Wrist Joint / Q000000981:diagnostic imaging*
chemical_list: D014527:Uric Acid; D002131:Calcium Pyrophosphate