Bird beak sign (disambiguation)

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:

• beak sign (arterial dissection)
• beak sign (pyloric stenosis)
• bird beak sign (esophagus)
• bird beak sign (right colon)
• bird beak sign (sigmoid colon)
• talar beak sign (talus)
• tectal beaking (midbrain)
• beak sign (ovary)

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 organ. While an adjacent organ with dull edges suggests that the mass compresses the organ but does not arise from it.