Thumb sign (epiglottitis)

The thumb sign in epiglottitis is a manifestation of an oedematous and enlarged epiglottis which is seen on lateral soft-tissue radiograph of the neck, and it suggests a diagnosis of acute infectious epiglottitis. This is the radiographic corollary of the omega sign 1-3.

See also

Thumb sign is a term also used in other conditions:

  • thumb sign (Marfan disease) (also known as Steinberg sign) 4: a clinical test in which the tip of the thumb is visible medial to the little finger when it is clasped in the clenched hand.
  • thumb sign (chordoma): a radiological sign showing a clival tumour projection indenting the pons 5.
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Article information

rID: 22909
Section: Signs
Tag: stub
Synonyms or Alternate Spellings:
  • Epiglottitis thumb sign
  • Thumb sign of epiglottitis

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Cases and figures

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    Fig 1: thumb
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     Case 1
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    Case 2
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    On the lateral vi...
    Case 3
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