title: [Pterygoïdien hydatid cyst].
abstract: BACKGROUND
  The cervico-facial hydatid cyst is rare. It accounts for 1% echinococcisis locations and usually involves the salivary gland and the thyroid. Pterygoid muscle involvement is exceptional.
  
  
  METHODS
  We report the case of a patient presenting a hydatid cyst of the pterygoid muscle. The patient presented a non specific progressive tumor syndrome.
  
  
  CONCLUSIONS
  This case illustrates the importance of CT scans. Surgery is always required. We emphasize the risk of complications when the diagnosis is missed.
authors.affiliation: Service de Chirurgie Maxillo-Faciale, Hôpital Sahloul, Sousse, Tunisie. turkiymen@yahoo.fr
authors.forename: I
authors.initials: I
authors.lastname: Turki
authors.forename: A
authors.initials: A
authors.lastname: Turki
authors.forename: H
authors.initials: H
authors.lastname: Khochtali
authors.forename: D
authors.initials: D
authors.lastname: Bakir
authors.forename: A
authors.initials: A
authors.lastname: Bakir
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D004443:Echinococcosis / Q000175:diagnosis*; D005153:Facial Neoplasms / Q000175:diagnosis; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D009135:Muscular Diseases / Q000469:parasitology*; D011626:Pterygoid Muscles / Q000469:parasitology*; D014057:Tomography, X-Ray Computed