Doughnut sign on bone scinigraphy

Last revised by Henry Knipe on 19 Sep 2022

Citation, DOI, disclosures and article data

Citation:

Niknejad M, Knipe H, Bell D, et al. Doughnut sign on bone scinigraphy. Reference article, Radiopaedia.org (Accessed on 30 Nov 2023) https://doi.org/10.53347/rID-23434

DOI:

https://doi.org/10.53347/rID-23434

Permalink:

https://radiopaedia.org/articles/23434

rID:

23434

Article created:

15 Jun 2013, Mohammad Taghi Niknejad ◉

Disclosures:

At the time the article was created Mohammad Taghi Niknejad had no recorded disclosures.

View Mohammad Taghi Niknejad's current disclosures

Last revised:

19 Sep 2022, Henry Knipe ◉ ◈

Disclosures:

At the time the article was last revised Henry Knipe had the following disclosures:

Radiopaedia Events Pty Ltd, Speaker fees (past)
Integral Diagnostics, Shareholder (ongoing)
Micro-X Ltd, Shareholder (ongoing)

These were assessed during peer review and were determined to not be relevant to the changes that were made.

View Henry Knipe's current disclosures

Revisions:

8 times, by 5 contributors - see full revision history and disclosures

Systems:

Musculoskeletal

Sections:

Signs

Tags:

cases, case2

Synonyms:

Doughnut sign of bone
Donut sign on bone scan
Doughnut sign (bone scan)
Doughnut sign (bone scintigraphy)
Doughnut sign on bone scan

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.