Presentation
Tender lumbar spine following a fall. X-ray to rule out a fracture.
Patient Data
Age: 17 years
Gender: Female
From the case:
Lumbar vertebral aneurysmal bone cyst
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Info
There is an expansile, bubbly lesion seen arising from the posterior elements on the left side of L3. The cortex is intact and the lesion demonstrates internal lumen septae. The lesion is benign in appearance, consistent with an aneurysmal bone cyst. The differential diagnosis includes osteoblastoma and osteochondroma, however these are less likely.
Case Discussion
Imaging is almost pathognomonic but it is conceivable that an unusual appearing other entity could have similar appearances. Imaging carried out three years later show no change, reinforcing this point.
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