Coffee Bean Sign Radiology. The “coffee bean” sign is seen on supine plain films of the abdomen in approximately 80% of cases of sigmoid volvulus. The sigmoid colon is very dilated because it is twisted at the root of its mesentery in the left iliac fossa (lif).
4 it is a mechanical obstruction that occurs when a mobile portion of colon twists around a fixed base, causing obstruction at the point of maximal. 2 laparotomy confirmed the diagnosis of sigmoid volvulus. 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.
2 laparotomy confirmed the diagnosis of sigmoid volvulus.
A coffee bean or omega loop sign has been described on abdominal radiograph, these terms refer to the two large compartments of distended sigmoid colon with central double walls of colon and a. Anteroposterior radiograph of the abdomen demonstrates the characteristic coffee bean sign in sigmoid volvulus. The lateral walls of the twisted intestinal loops form the outer contours of the coffee bean. Click image to align with top of page.