Double density sign (osteoid osteoma)

Last revised by Deleted User on 26 Dec 2016

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.

See also

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Cases and figures

  • Case 1 - osteoid osteoma
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