title: Occipital pain in osteoid osteoma of the atlas. A report of two cases.
abstract: METHODS
  Two cases of occipital pain caused by an osteoid osteoma of the atlas are presented.
  
  
  OBJECTIVE
  To describe the management of occipital pain in two young patients.
  
  
  BACKGROUND
  Osteoid osteoma is a benign lesion mostly affecting the long bones. A spinal location is uncommon. To the authors' knowledge, there are only five other reports of an osteoid osteoma located in the atlas.
  
  
  METHODS
  Occipital headache, which was relieved by salicylates, was the major symptom reported by the two adolescents. In the first patient, a lesion of C1 was seen on plain radiographs. In the second patient, the diagnosis of osteoid osteoma was suggested by scintigraphic imaging and subsequently by computed tomography.
  
  
  RESULTS
  Pain disappeared in both cases after surgical excision of the lesion. Histologic examination disclosed characteristic features of osteoid osteoma.
  
  
  CONCLUSIONS
  Occipital pain in adolescents, which is relieved by aspirin, should raise suspicion about the possibility of an osteoid osteoma of the atlas. If standard cervical spine radiographs are negative, isotope scanning and computed tomography can help to establish the diagnosis. Complete excision eliminates the lesion and produces immediate relief for the patient.
mesh_terms: D000328:Adult; D001270:Cervical Atlas / Q000000981:diagnostic imaging / Q000601:surgery; D005500:Follow-Up Studies; D006261:Headache / Q000209:etiology* / Q000601:surgery; D006801:Humans; D007796:Laminectomy; D008297:Male; D019547:Neck Pain / Q000209:etiology* / Q000601:surgery; D009777:Occipital Bone; D010017:Osteoma, Osteoid / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D013125:Spinal Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D014057:Tomography, X-Ray Computed