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Trevor disease

Case contributed by Muneesh Sharma
Diagnosis almost certain

Presentation

Long-standing knee pain. Now deformity and difficult weight bearing

Patient Data

Age: 7 years
Gender: Male

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

x-ray

Radiograph of skeletally immature knee shows asymmetric physis with thickening of the medial epiphysis. Inferior to this, there is calcification in a typical pattern of chondroid matrix in "rings and arcs" pattern.

ct

See below

mri

See below

Case Discussion

Plain radiograph and CT and MRI confirm the presence of an intra articular osteochondroma (has a stalk with ossific and cartilaginous components) arising from the medial femoral condyle of dysplasia epiphysealis hemimelica.

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