Bone within a bone appearance

Last revised by Pir Abdul Ahad Aziz Qureshi on 12 Dec 2021

Bone within a bone is a descriptive term applied to bones that appear to have another bone within them. There are numerous causes including:

A useful mnemonic to remember the etiologies is GHOST DRAGON.

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Cases and figures

  • Case 1: osteopetrosis
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  • Case 2: idiopathic / normal variant
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  •  Case 3: osteopetrosis
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  • Case 4: HPT correction in preemie
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  • Case 5: osteopetrosis
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