Osteoid osteoma

Case contributed by Dr Angela Byrne

Presentation

left hip pain

Patient Data

Age: 10 years
X-ray

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.

CT

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 generalised increase activity.

Case Discussion

Findings are characteristic of an osteoid osteoma  which was subsequently histologically confirmed.

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Case information

rID: 7592
Case created: 11th Nov 2009
Last edited: 24th Jul 2016
Tag: femur
Inclusion in quiz mode: Included

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