Aneurysmal bone cyst of the calcaneus
Presentation
Chronic left heel pain .
Patient Data
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Well defined expansile osteolytic lesion with thin sclerotic margins seen involving the posterior half of calcaneaus bone.
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Increased uptake in the left calcaneous, suggestive of a bone tumor. No other significant abnormal uptake to suggest distant metastasis.
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Well-defined expansile multiloculated mass (measuring approximately 4.5 x 3.8 x 4.5 cm) in the calcaneus.
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Approximately 41x47x48 mm well-defined lobulated multiloculated mass in calcaneus.
- Expansile nature with adjacent cortical thinning.
- Intralesional multiple hemorrhage-fluid level and peripheral dark signal intensity rim.
- Intralesional mild thin septal enhancement.
- Mild perilesional bone marrow edema.
- No solid enhancing portion.
Case Discussion
Gadolinium was given to differentiate between the primary and secondary aneurysmal bone cysts through detecting of internal soft tissue component that indicating underlying primary pathology (since the secondary ABC developed secondary to an underlying lesion).
Unfortunately , pathological fracture occurred for this patient after traumatic event .