Doughnut sign on bone scinigraphy

Last revised by Henry Knipe on 19 Sep 2022

The doughnut sign refers to the bone scintrigraphy pattern where there is increased uptake peripherally with a photopenic center. This appearance may be seen in a number of cystic lesions including:

The doughnut sign is a non-specific sign, and can also be seen in chondrosarcoma, telangiectatic osteosarcoma and any other lesions that show aneurysmal bone cyst changes within. It has also been described in non-traumatic osteonecrosis.

See also

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Cases and figures

  • Figure 1: doughnut
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  •  Case 1
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