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Medulloblastoma with CNS Dissemination
Joseph Junewick, MD FACR
over 5 years ago
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Case History


School-aged male with ankle pain and no history of trauma or infection.


Case Detail

Anatomy: Musculoskeletal
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Neoplasia Benign
Created: over 8 years ago
Updated: over 8 years ago
Tags: PEDS
Modality/Study Types: MR
Activities:
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Reveal 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.

Reveal 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.

Reveal Diagnosis

Osteoid osteoma

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