- Children and adolescents
- 2nd decade of life
- Pain at night, relieved by aspirin or other NSAIDs
- Usually in tubular bones, often in vertebrae (painful scoliosis, dense pedicle)
- Can be polyostotic
- Surgery – main stay
- RFA and HIFU also used nowadays for treatment
Imaging
- Plain film
- Central nidus, surrounding sclerotic reaction
- Nidus may have calcification
- MRI
- Soft tissue or bone marrow edema around lesion may be sometimes seen in MRI
- Low signal in all sequence around nidus due to sclerosis
- Skeletal scintigram
- Focal hypervascularity, high uptake
- Negative scintigram rules out osteoma
Read more
Chai, Jee Won, et al. “Radiologic diagnosis of osteoid osteoma: from simple to challenging findings.” Radiographics 30.3 (2010): 737-749.
Napoli, Alessandro, et al. “Osteoid osteoma: MR-guided focused ultrasound for entirely noninvasive treatment.” Radiology 267.2 (2013): 514-521.
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