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Vertebral scalloping

Last revised by Dr Yuranga Weerakkody on 08 Sep 2021

Vertebral scalloping is a concavity to the posterior (or less commonly anterior) aspect of the vertebral body when viewed in a lateral projection. A small amount of concavity is normal, as is concavity of the anterior vertebral body (see vertebral body squaring).

Posterior scalloping

Causes of posterior scalloping include the following, organized by mechanism 5:

A useful mnemonic can be found here.

Anterior scalloping

Causes of increased anterior scalloping include:

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Cases and figures

  • Case 1: schwanoma
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  • Case 2: achondroplasia
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  • Case 3: schwannoma
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  • Case 4: ependymoma
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  • Case 5: paraganglioma
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  • Case 6: dural ectasia in Marfan syndrome
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  • Case 7: anterior vertebral scalloping - from aneurysm
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  • Case 8: in neurofibromatosis
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