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Osteoid Osteoma
Case Detail
| Anatomy: Musculoskeletal |
 Joseph Junewick, MD FACR |
| Diagnostic Category: Neoplasia Benign |
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| Created: over 4 years ago |
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| Updated: over 3 years ago |
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| Tags:
PEDS
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| Modality/Study Types:
MR
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Activities:  PDF  ImageJA |
History
School-aged male with ankle pain and no history of trauma or infection.
Case Images
Diagnosis
Osteoid osteoma
Findings
MR – Sagittal IR, axial fat-suppressed T2, and sagittal and axial post-gadolinium fat-suppressed T1 images demonstrate IR, T2 and post-gadolinium hyperintense lesion in the tibial epiphysis.
Discussion
Osteoid osteoma (OO) is a common benign bone tumor. A caucasian male in the 2nd decade of life with well-localized pain which is worse at night and relieved by nonsteroidal anti-inflammatory medications is the classic scenario for OO.
OO are usually medullary more often than cortical or subperiosteal; more often metaphyseal, more than dimetaphyseal, diaphyseal, or epiphyseal. OO are most common in the femur followed by the tibia; tubular bones are more common than flat bones.
OO can be diagnosed by conventional radiography, CT, scintigraphy and MR.