Apple core sign (colon)

Last revised by Mohammadtaghi Niknejad ◉ on 26 Jun 2022

Citation, DOI, disclosures and article data

Citation:

Niknejad M, Knipe H, Anan R, et al. Apple core sign (colon). Reference article, Radiopaedia.org (Accessed on 28 May 2023) https://doi.org/10.53347/rID-21967

DOI:

https://doi.org/10.53347/rID-21967

Permalink:

https://radiopaedia.org/articles/21967

rID:

21967

Article created:

1 Mar 2013, Mohammadtaghi Niknejad ◉

Disclosures:

At the time the article was created Mohammadtaghi Niknejad had no recorded disclosures.

View Mohammadtaghi Niknejad's current disclosures

Last revised:

26 Jun 2022, Mohammadtaghi Niknejad ◉

Disclosures:

At the time the article was last revised Mohammadtaghi Niknejad had no recorded disclosures.

View Mohammadtaghi Niknejad's current disclosures

Revisions:

28 times, by 12 contributors - see full revision history and disclosures

Systems:

Gastrointestinal, Oncology

Sections:

Signs, Gamuts

Synonyms:

Napkin ring sign (colon)
Apple-core sign
Apple core sign of the colon
Apple core appearance of the colon

The apple core sign, also known as the napkin ring sign (bowel), is most frequently associated with constriction of the lumen of the colon by a stenosing annular colorectal carcinoma.