Presentation
Ongoing left mid-calf pain, aggravating at night. No prior medical or surgical history. Referred by GP.
Patient Data
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Extensive cortical thickening and reactive sclerosis involving medial aspect of the distal diaphysis of the tibia.
There is an impression of a small central cortical lucency suggestive of a tiny nidus.
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Intense delayed focal uptake seen in the medial left mid-tibial cortex correlating with the thick periosteal reaction on the radiographs.
At the epicenter of the increased uptake lies a 5 mm photopenic lesion located in the medial tibial cortex consistent with nidus of an osteoid osteoma.
Case Discussion
Osteoid osteoma is benign tumor of the bone which typically causes nocturnal pain, classically alleviated by aspirin.
It shows typical focal intense radiotracer uptake on a bone scan.
This patient was successfully treated with radiofrequency ablation of the lesion.
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