title: [Costo-vertebral hydatid disease: the role of MRI].
abstract: BACKGROUND
  Hydatid disease of bone is very rare accounting for 0.5% - 3% of all localisations.
  
  
  METHODS
  We report the case of a woman of 30 years who presented with posterior chest pain. The chest radiograph showed an extra-pulmonary mass associated with a lytic rib lesion. Thoracic ultrasound revealed a multiloculated soft tissue and fluid mass. CT scan showed a fluid filled costo-vertebral cyst. MRI identified extension into the spinal canal. Pathological examination of the surgically resected material confirmed the diagnosis.
  
  
  CONCLUSIONS
  This observation emphasises the role of MRI in assessing the extent of hydatid cysts of the posterior chest wall and in particular invasion of the spinal canal.
authors.affiliation: Service de Pneumologie Ibn Nafiss, Hôpital Abderrahmen, Mami Ariana, Tunisie.
authors.forename: S
authors.initials: S
authors.lastname: Maalej
authors.forename: D
authors.initials: D
authors.lastname: Belhabib
authors.forename: S
authors.initials: S
authors.lastname: Hantous
authors.forename: S
authors.initials: S
authors.lastname: Fenniche
authors.forename: A
authors.initials: A
authors.lastname: Ammar
authors.forename: S
authors.initials: S
authors.lastname: Hammami
authors.forename: M-L
authors.initials: ML
authors.lastname: Megdiche
mesh_terms: D000328:Adult; D001847:Bone Diseases / Q000469:parasitology* / Q000473:pathology; D002637:Chest Pain / Q000209:etiology; D004443:Echinococcosis; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D012272:Ribs / Q000469:parasitology / Q000473:pathology; D013118:Spinal Cord Diseases / Q000469:parasitology* / Q000473:pathology