Arrowhead sign (caecum)

The arrowhead sign refers to the focal caecal thickening centred on the appendiceal orifice, seen as a secondary sign in acute appendicitis. The contrast material in the caecal lumen assumes an arrowhead configuration, pointing at the appendix.  

The arrowhead sign is applicable only when enteric contrast distends the caecum.

See also

Caecal bar sign

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Article information

rID: 12246
Section: Signs
Synonyms or Alternate Spellings:
  • Arrow head sign (caecum)

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Cases and figures

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