Napkin ring sign (disambiguation)
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At the time the article was created Francis Deng had no recorded disclosures.View Francis Deng's current disclosures
At the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
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The napkin ring sign may refer to either of the following imaging findings:
napkin ring sign (colon): colonic stenosis such as due to colon cancer
napkin ring sign (coronary): coronary artery vulnerable plaque
A clinical napkin ring sign of myotonia (e.g. in myotonic dystrophy) also exists, whereby striking the tongue elicits a characteristic pattern of contractions 1.
A napkin ring is a decorative household item used in some Western societies to hold cloth napkins in a roll at its center. The imaging metaphor applies to circumferential stenotic lesions.