title: [Primary heterotopic pleural hydatid cyst presenting as a pneumothorax].
abstract: BACKGROUND
  Hydatid cyst is a parasitic disease that is endemic in many countries. Pneumothorax may be a presentation of this disease that presents urgent problems of diagnosis and treatment.
  
  
  METHODS
  We report the case of a 23-year-old woman, amenorrheic for 22 weeks, who presented with chest pain and dyspnoea. Chest x-ray revealed a right-sided tension pneumothorax. A check x-ray after drainage showed a homogeneous opacity of water density occupying the lower 2/3 of the right hemithorax. Thoracic ultrasound suggested an uncomplicated hydatid cyst at the right base. Surgical exploration revealed a hydatid cyst 14cm in diameter in the pleural space, and a cavity in the right lower lobe with two bronchial fistulae. Treatment consisted of removal of the cyst intact, closure of the bronchial fistulae and capitonnage of the residual cavity. The postoperative course was uncomplicated.
  
  
  CONCLUSIONS
  Primary heterotopic pleural hydatid cyst is an exceptional cause of pneumothorax that should considered in countries where hydatid disease is endemic. Treatment is surgical following drainage of the pneumothorax.
authors.affiliation: Service de chirurgie thoracique et cardiovasculaire, hôpital Abderrahmen Mami de pneumophtisiologie, Ariana, Tunisia. marghli_adel@yahoo.fr
authors.forename: A
authors.initials: A
authors.lastname: Marghli
authors.forename: A
authors.initials: A
authors.lastname: Ayadi-Kaddour
authors.forename: S
authors.initials: S
authors.lastname: Ouerghi
authors.forename: M S
authors.initials: MS
authors.lastname: Boudaya
authors.forename: S
authors.initials: S
authors.lastname: Zairi
authors.forename: B
authors.initials: B
authors.lastname: Smati
authors.forename: T
authors.initials: T
authors.lastname: Mestiri
authors.forename: T
authors.initials: T
authors.lastname: Kilani
mesh_terms: D000328:Adult; D000818:Animals; D001983:Bronchial Fistula / Q000175:diagnosis / Q000469:parasitology* / Q000601:surgery; D004322:Drainage; D004445:Echinococcosis, Pulmonary / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D004446:Echinococcus / Q000302:isolation & purification; D005260:Female; D006801:Humans; D010995:Pleural Diseases / Q000175:diagnosis / Q000469:parasitology* / Q000601:surgery; D011013:Pneumonectomy; D011030:Pneumothorax / Q000175:diagnosis / Q000469:parasitology* / Q000601:surgery; D016896:Treatment Outcome