Epidemiology
It mainly affects children, adolescents, and young adults. Night pain that clearly improves with anti-inflammatory medication is a useful clinical clue before confirming the nidus on imaging.
Basic features
A small tumor with characteristic night pain, often relieved by anti-inflammatory medication.
Usual treatment
The pain can usually be controlled with anti-inflammatory medication and, over time, the lesion may even resolve on its own; when the pain is intolerable, CT-guided percutaneous ablation of the nidus resolves most cases.
Outcomes and prognosis
Rapid pain relief when the nidus is treated completely. Percutaneous radiofrequency ablation has a high success rate, with low recurrence; it does not become malignant.