Coffee Bean Sign Radiology

The coffee bean sign is a radiological sign used to describe the twisting of the sigmoid colon about its mesenteric axis mimicking the picture of a coffee bean Figure 1CThe two side parts of the bean represent the gasfilled segments of the dilated bowel creating an inverted Ushape whereas the central cleft of the bean represents the double thickness of opposed bowel walls.

Coffee bean sign radiology. This results in the appearance of a giant coffee bean the typical sign of sigmoid volvulus. The coffee-bean sign or kidney bean sign or bent inner tube sign on an abdominal plain film. Coffee Bean Sign X Ray.

The lateral walls of the twisted intestinal loops form the outer contours of the coffee bean. This is the coffee bean sign. The plain film coffee bean sign northern exposure sign as well as the CT whirl sign andor transition point are indicative of bowel obstruction including mural thickening and dilatation of the bowel.

Coffee bean sign 5. This was nicely described in Radiology in an article by Feldman. The plain film coffee bean sign northern exposure sign as well as the CT whirl sign andor transition point are indicative of bowel obstruction including mural thickening and dilatation of the bowel loops.

This has also been observed in abdominal X-rays and is highly suggestive of sigmoid volvulus 2. 820 Jorie Blvd Suite 200 Oak Brook IL 60523-2251 US. An award-winning radiologic teaching site for medical students and those starting out in radiology focusing on chest GI cardiac and musculoskeletal diseases containing hundreds of lectures quizzes hand-out notes interactive material most commons lists and pictorial differential diagnoses.

Frimann-Dahl sign - three dense lines converge towards the site of obstruction. Authors Umer Salati Graeme McNeill William C Torreggiani. This line is surrounded by the curved and dilated gas-filled lumen resulting in a coffee bean-shaped structure.

MT Niknejad MD radRounds Radiology Network Member. When the occluded intestinal loops are dilated with air closed loop the medial walls will touch and the inner line will create a coffee bean configuration. Sigmoid volvulus - coffee bean sign.