BONE TUMORSOsteoid osteoma of the acetabulum: diagnosis and medical treatmentLaliotis, Nikolaos A.a; Bindoudi, Antonia S.b; Tsitouridis, Ioannis A.b; Petrakis, Iordanis G.a; Kirkos, John M.aAuthor Information a3rd Orthopaedic Department, Aristotle University of Thessaloniki Medical School, Papageorgiou General Hospital bDepartment of Radiology, Papageorgiou General Hospital, Thessaloniki, Greece Correspondence to Iordanis G. Petrakis, MD, 7 Konstantinou Melenikou Street, Thessaloniki 54635, Greece Tel: +30 697 442 7200; fax: +30 231 099 1567; e-mail: [email protected] Journal of Pediatric Orthopaedics B: November 2017 - Volume 26 - Issue 6 - p 565-569 doi: 10.1097/BPB.0000000000000438 Buy Metrics Abstract We describe the medical management of an acetabular osteoid osteoma in an 11-year-old girl. There was a 2-year delay until proper diagnosis of the patient’s pathology was made. Accurate localization of the nidus in the subchondral bone, involving the cartilage, is difficult on the basis of plain radiographs. All imaging methods, including computed tomography, MRI, and bone scintigraphy, were used to confirm the diagnosis. We proposed medical treatment to avoid possible severe complications from surgical intervention. At the patient’s latest follow-up visit, after 2 years of medical treatment with NSAIDs, there is complete healing of the osteoid osteoma and there is no sign of recurrence. Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved.