apple core sign

apple core sign

A radiologic sign having the appearance of the core of a partially eaten apple. When shown during barium enema examination, it is indicative of a focal stricture of the bowel that demonstrates shouldered margins. The most common cause of this sign is an annular carcinoma of the colon.
See: barium enemafor illus.
References in periodicals archive ?
The apple core sign is classically seen in cases of colon carcinoma.
The apple core sign is not seen in the larger-caliber cecum.