Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.

Definition of Bone cyst, aneurysmal

Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026

Bone cyst, aneurysmal: A benign lesion in a bone that contains connective tissue and blood inside a thin bony shell. Aneurysmal bone cysts act like tumors and expand the bone, and they typically occur in the second decade of life. They can affect any bone in the arms, legs, trunk, or skull.

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