Presentation
Right heel pain on weight bearing.
Patient Data
Age: 25 years
Gender: Male
From the case:
Aneurysmal bone cyst of the calcaneus
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Multilocular cystic lesion with irregular but sharp contours. Partly hemorrhagic content with fluid-fluid levels. Some perifocal bone edema. Only slight rim enhancements (Note that the blood-containing cavities are hyperintense on native T1 already).
Case Discussion
Fluid-fluid levels are considered as characteristic, but not specific to ABCs.