Bird beak sign (disambiguation)

Last revised by Daniel J Bell on 10 May 2024

Bird beak sign is used in many contexts to denote a rapid tapering to a point, reminiscent of a bird's beak. Described bird beak signs include: 

The term “beak sign” is also applied when a mass deforms the edge of an adjacent organ into a “beak” shape, suggesting that the mass arises from that organ1. While an adjacent organ with dull edges suggests that the mass compresses the organ but does not arise from it.

Cases and figures

  • Bird beak (photo)
  • Figure 1: beak sign (ovary)
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