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Aneurysmal bone cysts generally occur in the second and third decades of life and have not been reported in patients younger than 1 yr. 8 mo. In some cases, trauma has been implicated as a cause. A concurrent classical aneurysmal bone cyst and healing fracture were seen in the radius of a newborn. The possibility that the trauma caused the cyst is suggested.
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Lionel D. Ginsburg (1974) studied this question.
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