title: Osteoid osteoma of the acetabular roof: a case report.
abstract: BACKGROUND
  An acetabular location of osteoid osteoma is rare and represents less than 1 % of cases. The purpose of this clinical case report is to highlight the unusual location of osteoid osteoma and the technical difficulty of its removal.
  
  
  METHODS
  We report a case of a 17-year-old Moroccan Arab boy who presented with pain in his right hip with lameness. The diagnosis of osteoid osteoma was made by imagery and confirmed by histological examination. The treatment consisted of a complete percutaneous resection scanno-guided of the nidus. The evolution was marked by complete healing with total and definitive disappearance of symptoms after 1 year.
  
  
  CONCLUSIONS
  Osteoid osteoma of the acetabular roof is rare. The diagnosis is now easy because of the evolution of imaging. Treatment is exclusively surgical. Complete resection guarantees the absence of recurrence. The difficulty of the surgical procedure is due to the deep localization of the osteoid osteoma and because it is endosseous, it is also dangerous due to anatomical relationships and the small size of the osteoid osteoma.
authors.affiliation: Department of Orthopedic Trauma, Mohamed V Military Hospital, University Mohamed V- Souissi, Rabat, Morocco. youssef.benyass@gmail.com.
authors.forename: Youssef
authors.identifier: http://orcid.org/0000-0003-2818-3366
authors.initials: Y
authors.lastname: Benyass
authors.affiliation: Department of Orthopedic Trauma, Mohamed V Military Hospital, University Mohamed V- Souissi, Rabat, Morocco.
authors.forename: Bouchaib
authors.initials: B
authors.lastname: Chafry
authors.affiliation: Department of Orthopedic Trauma, Mohamed V Military Hospital, University Mohamed V- Souissi, Rabat, Morocco.
authors.forename: Kaldadak
authors.initials: K
authors.lastname: Koufagued
authors.affiliation: Department of Orthopedic Trauma, Mohamed V Military Hospital, University Mohamed V- Souissi, Rabat, Morocco.
authors.forename: Belkacem
authors.initials: B
authors.lastname: Chagar
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000473:pathology*; D000293:Adolescent; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D010017:Osteoma, Osteoid / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D010146:Pain; D015641:Radiography, Interventional; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D016138:Walking
keywords: Interventional radiology; Osteoid osteoma; Percutaneous treatment