Aneurysmal bone cyst

Case contributed by Ahmed Abdrabou


Left elbow pain and swelling with remote history of trauma during volley ball game.

Patient Data

Age: 10
Gender: Female

Proximal ulnar metadiaphyseal expansile lesion that extends to the epiphysis. This lesion displays multiple cysts with fluid/fluid level denoting different ages blood products.

Case Discussion

Diagnosis: aneurysmal bone cyst.

Differential diagnosis includes fibrous dysplasia, telangiectatic osteosarcoma, giant cell tumor and brown tumor of hyperparathyroidism.

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