title: [Recurrent pericarditis revealing a systemic sarcoidosis].
abstract: BACKGROUND
  Sarcoidosis is a systemic granulomatous disorder of unknown cause, mainly involving the lung and the mediastinum. Involvement of the pericardium and peritoneum is rare, but can be the first manifestation of the disease.
  
  
  METHODS
  A 55-year-old female patient was followed-up for a recurrent "idiopathic" pericarditis. Diagnostis was challenged when she secondarily presented with enlarged hilar and mediastinal lymph nodes associated with pulmonary "nodules". Imaging with (18)F-FDG positron emission tomography with computed tomography showed multiple hypermetabolic foci in the mediastinum and peritoneum, which suggested a malignant disorder. Finally, histopathological evaluation of the peritoneal nodules revealed a sarcoidosis. A corticosteroid therapy was initiated and disease course was favourable.
  
  
  CONCLUSIONS
  This case report highlights the importance of a unique explanation for a patient presenting with recurrent pericarditis associated with a systemic disease. Although rare, sarcoidosis should be discussed and diagnostic procedures should be performed to obtain histological confirmation.
authors.affiliation: Service de Médecine Interne, Assistance Publique Hôpitaux de Marseille (AP-HM), Hôpital Nord, Chemin des Bourrely, 13915 Marseille cedex 15, France.
authors.forename: A-I
authors.initials: AI
authors.lastname: Bocoum
authors.forename: A
authors.initials: A
authors.lastname: Daumas
authors.forename: S
authors.initials: S
authors.lastname: Cammilleri
authors.forename: F
authors.initials: F
authors.lastname: Bernard
authors.forename: P
authors.initials: P
authors.lastname: Rossi
authors.forename: D
authors.initials: D
authors.lastname: Bagneres
authors.forename: A-L
authors.initials: AL
authors.lastname: Demoux
authors.forename: K
authors.initials: K
authors.lastname: Aissi
authors.forename: J-P
authors.initials: JP
authors.lastname: Dales
authors.forename: S
authors.initials: S
authors.lastname: Berdah
authors.forename: K
authors.initials: K
authors.lastname: Chaumoitre
authors.forename: Y
authors.initials: Y
authors.lastname: Frances
authors.forename: B
authors.initials: B
authors.lastname: Granel
mesh_terms: D005260:Female; D006801:Humans; D008875:Middle Aged; D010493:Pericarditis / Q000209:etiology*; D012008:Recurrence; D012507:Sarcoidosis / Q000150:complications* / Q000175:diagnosis*