title: [Calcium pyrophosphate dihydrate crystal deposition disease as an example of illness presentation in the elderly].
abstract: Illness presentation in the elderly may be entirely non-specific, with fatigue, loss of function or the presence of geriatric syndromes. We report a 90 years old male consulting in the emergency room for delirium that persisted throughout hospitalization without finding a cause. During the course of hospitalization mild fever appeared and a left knee swelling became apparent. A synovial fluid aspiration showed a leukocyte count of 360 per field with 60% polymorphonuclear cells. The culture was negative. With a presumptive diagnosis of pseudogout, cochicine and celecoxib were started with remission of the confusional state. The patient was discharged 13 days after admission in good conditions.
authors.forename: Paola R
authors.initials: PR
authors.lastname: Fuentes
authors.forename: Javier
authors.initials: J
authors.lastname: Webar
authors.forename: Carla
authors.initials: C
authors.lastname: Matus
authors.forename: Cristián
authors.initials: C
authors.lastname: Vergara
authors.forename: Michelle
authors.initials: M
authors.lastname: Herrera
authors.forename: Elizabeth M
authors.initials: EM
authors.lastname: Barthel
authors.forename: Jorge S
authors.initials: JS
authors.lastname: Vega
mesh_terms: D000369:Aged, 80 and over; D002097:C-Reactive Protein / Q000032:analysis; D002131:Calcium Pyrophosphate; D002805:Chondrocalcinosis / Q000150:complications*; D003693:Delirium / Q000209:etiology*; D005334:Fever / Q000209:etiology; D006801:Humans; D007718:Knee Injuries / Q000150:complications*; D008297:Male
chemical_list: D002097:C-Reactive Protein; D002131:Calcium Pyrophosphate