Liver overlap sign (sigmoid volvulus)

Last revised by Ibrahim M. Jubarah on 19 Jan 2022

Citation, DOI, disclosures and article data

Citation:

Fortin F, Jubarah I, Shah V, Liver overlap sign (sigmoid volvulus). Reference article, Radiopaedia.org (Accessed on 18 Apr 2024) https://doi.org/10.53347/rID-60286

DOI:

https://doi.org/10.53347/rID-60286

Permalink:

https://radiopaedia.org/articles/60286

rID:

60286

Article created:

16 May 2018, Francis Fortin

Disclosures:

At the time the article was created Francis Fortin had no recorded disclosures.

View Francis Fortin's current disclosures

Last revised:

19 Jan 2022, Ibrahim M. Jubarah

Disclosures:

At the time the article was last revised Ibrahim M. Jubarah had no recorded disclosures.

View Ibrahim M. Jubarah's current disclosures

Revisions:

3 times, by 3 contributors - see full revision history and disclosures

Systems:

Gastrointestinal

Sections:

Signs

Tags:

signs

Synonyms:

overlapping liver sign

The liver overlap sign can be seen in sigmoid volvulus wherein the sigmoid loop is seen, usually on an abdominal radiograph, ascending to the right upper quadrant and projecting over the liver shadow.

In one study of 21 patients with confirmed sigmoid volvulus, the sign was present in 9 patients (43%) ¹.