Patient Data
Age: 70 years
Gender: Male
From the case:
Chondromyxoid fibroma
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Frontal

A focal lucent lesion of the proximal ulna is demonstrated with a narrow zone of transition.
From the case:
Chondromyxoid fibroma
Axial bone window

Single CT image through the lesion confirms the presence of the lesion that is confined to the cortex of the bone.
From the case:
Chondromyxoid fibroma
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Sagittal T2 fat sat

MRI demonstrates the lesion to have very high T2 signal and low T1 signal with no adjacent soft tissue component or bone marrow edema.
Case Discussion
This patient went on to have a curettage confirming the diagnosis of a chondromyxoid fibroma
Histology
- Intramedullary contents from the left ulna showing chondromyxoid fibroma.