Presentation
Hip pain. Incidental finding on plain radiographs.
Patient Data
Age: 7 years
Gender: Female
From the case:
Cortical desmoid
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Frontal
Poorly defined lytic lesion in the posterior femoral metaphysis.
From the case:
Cortical desmoid
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Axial T1
T1 hypointense and T2 hyperintense, lobulated, cortically-based mass (interestingly despite being histologically fibrous they still have increased T2 signal). It is much more circumscribed on the MRI.
Case Discussion
These are considered to be benign lesions that are self-limiting. They can also be seen following repetitive trauma and are then known as cortical desmoids (due to mechanical pull by the medial head of the gastrocnemius).
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