Double density sign (osteoid osteoma)

The double density sign, also sometimes clumsily referred to as the hotter spot within hot area sign, is a bone scan sign of an osteoid osteoma.

It refers to a central focus of intense uptake (the nidus) within a surrounding lower, but nonetheless increased uptake, rim.

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Article information

rID: 8428
Section: Signs
Synonyms or Alternate Spellings:
  • Hotter spot within hot area sign
  • Double density sign of osteoid osteomas

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Cases and figures

  • Case 1 - osteoid osteoma
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