title: Multiple brown tumors and pathologic patellar fracture in a patient with secondary hyperparathyroidism.
abstract: A 79-year-old woman presents with left anterior knee pain after a fall.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Vernace
authors.forename: Laura W
authors.initials: LW
authors.lastname: Bancroft
mesh_terms: D000368:Aged; D005260:Female; D005598:Fractures, Spontaneous / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000150:complications / Q000503:physiopathology* / Q000601:surgery; D010002:Osteitis Fibrosa Cystica / Q000000981:diagnostic imaging / Q000209:etiology; D016105:Parathyroidectomy; D010329:Patella / Q000293:injuries*; D011859:Radiography