Osteoid osteoma

Case contributed by Dr Angela Byrne


Left hip pain

Patient Data

Age: 10 years

Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.


Radiograph of the pelvis and hips of a 10 year old girl, demonstrates a lucency in the region of the greater trochanter on the left, with no convincing soft tissue mass or periosteal reaction. There is however diffuse surrounding sclerosis.


The lesion and sclerosis are confirmed on CT which demonstrates a sharply demarcated oval lesion, with a central focus of sclerosis.

Nuclear medicine

Bone scan demonstrates a double density sign, with a focal region of intense uptake, superimposed on a larger area of generalized increase activity.

Case Discussion

Findings are characteristic of an osteoid osteoma, confirmed with histology.

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Case information

rID: 7592
Published: 11th Nov 2009
Last edited: 13th Feb 2021
Inclusion in quiz mode: Included