Beak sign (pyloric stenosis)

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

Terminology

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

Radiographic features

Barium meal

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.

See also

• caterpillar sign

• string sign

• double track sign

• shoulder sign

• mushroom sign