![](https://i1.wp.com/radrounds.com/wp-content/uploads/2020/06/CoffeeBeanSign-X-Ray-KUB.png?resize=696%2C466&ssl=1)
The coffee-bean sign or kidney bean sign or bent inner tube sign on an abdominal plain film. Sigmoid-cecum volvulus (although some authors have also used the term to refer to closed loop small bowel obstructions)
Source: Dr. MT Niknejad MD (radRounds Radiology Network Member)