Polka-dot sign
Axial bone window
Polka-dot sign
Modality: CT (bone window)

- “ CT images show thickening of the primary vertical weight baring trabeculae leading to corduroy sign on sagittal projection and polka-dot sign axia...”

Used in the following article:

  • Polka-dot sign (vertebral hemangioma) - “ The polka-dot sign is the result of the replacement of the normal cancellous bone by thickened vertical trabeculae surrounded by fat marrow or vas...”
  • Primary intraosseous hemangioma - “ Primary intraosseous hemangiomas, also referred to as vascular hamartomas, are hemangiomas seen most frequently in the vertebrae or skull, that co...”

View full size version of Polka-dot sign and corduroy sign - intraosseous vertebral hemangioma

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