Abstract
Osteoid osteoma is a benign bone tumor and causes persistent pain that is usually treated by surgery or ablation therapy. Conservative management with non-steroidal anti-inflammatory drugs (NSAIDs) is also used to avoid the morbidity associated with surgery or ablation therapy; however, it usually takes several years for the condition to resolve using conservative treatment. Our patient, a 10-year-old boy, presented with a 3-month history of a painful lesion in his leg. Plain radiography, bone scanning, computed tomography and magnetic resonance images showed the presence of a lesion with radiological features consistent with an osteoid osteoma of the cortex in the tibial diaphysis. The patient was treated with a usual dose of ibuprofen for 3 weeks. Within 3 weeks, his symptoms were almost completely resolved; he no longer needed NSAIDs and returned to normal life. Repeat imaging studies showed complete disappearance of the nidus within 2.5 years after the resolution of symptoms.
Highlights
Introduction osteoid osteomaa bone scan revealed the double-density sign, which is Osteoid osteoma is a relatively common quite specific for diagnosis of osteoid osteoma Discussion skeletal neoplasm that occurs in young people. (Figure 1C).[1]
Magnetic resonance (MR) The lesion is most commonly located in the images showed a 10-mm circumscribed abnor- Osteoid osteoma most commonly arises in cortex of long bones, especially in the proximal mality located in the cortex of the tibia with the cortex of long bones
Increased local m concentration of prostaglandins have been found to be produced within the nidus, m explaining the excellent response to non-steroidal anti-inflamo matory drugs (NSAIDs).[1] o The general mechanism of action of NSAIDs is inhibition of the synthesis of prostaglandins
Summary
Introduction osteoid osteomaa bone scan revealed the double-density sign, which is Osteoid osteoma is a relatively common quite specific for diagnosis of osteoid osteoma Discussion skeletal neoplasm that occurs in young people. (Figure 1C).[1]. CT scans and MR images revealed complete radiological resolution of the nidus 2.5 years after initial presentation (Figure 3).
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