Beak sign (pyloric stenosis)

Last revised by Dr Yusra Sheikh on 27 Oct 2019

Beak sign in pyloric stenosis is one of the fluoroscopic (barium meal) findings which is useful in the diagnosis of congenital hypertrophic pyloric stenosis.

A beak-like tapering projection of barium is seen entering into the narrowed and compressed pyloric channel with distal tapering and narrowing of the barium streak.

The term bird's beak sign is used in a number of other contexts: see bird beak sign (disambiguation).

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