osteoid osteoma

Epidemiology

• generally occurs between ages 5-30 years
• male:female ratio 1:1

Pathology

• benign bone tumor
• bone cortical proliferation without cortical destruction

Clinical manifestations

• bone pain at night relieved by NSAIDs
• pain is generally of gradual onset, progressively worsening
• pain may be present for years

Radiology

• diagnosis generally made from plain radiograph
  • small nidus, generally < 1 cm
  • radiolucent to radiopaque, depending upon age of tumor
  • radiolucent ring around nidus
  • adjacent bone sclerosis
• bone scan sometimes need to located tumor
• computed tomography may better visualize tumor

Management

• NSAIDs to relieve pain
• surgical excision is curative

More general terms

• osteogenic neoplasm

Database

• OMIM: https://mirror.omim.org/entry/259550