Vertebral scalloping

Last revised by Frank Gaillard on 5 Feb 2025

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:

Cases and figures

  • Case 1: NF1
  • Case 2: achondroplasia
  • Case 3: schwannoma
  • Case 4: ependymoma
  • Case 5: paraganglioma
  • Case 6: dural ectasia in Marfan syndrome
  • Case 7: anterior vertebral scalloping - from aneurysm
  • Case 8: in neurofibromatosis
  • Case 9: schwannoma
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