Napkin ring sign (disambiguation)

Last revised by Craig Hacking on 18 Jan 2024

The napkin ring sign may refer to either of the following imaging findings:

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.

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Figure 1: napkin ring
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.