Coffee bean sign

Magnetic Resonance Imaging Diagnosis of Volvulus through Mesenteric Defect in Neonate

“… 2 12 Here, a central linear density formed by the double thickness of the apposed bowel wall bisects the dilated loop representing the cleft of a coffee bean. 14 This sign has not been previously described in a postnatal US in a newborn with nonmalrotation volvulus.…”

Prenatal diagnosis of fetal midgut volvulus: a case description

“…Some scholars maintain that the sonographic findings of a typical “whirlpool” can be used as the specific sign of a volvulus in intestinal malrotation. This “whirlpool” sign depicts loops of the small intestine more or less dilated and winding in a spiral form in two-dimensional (2D) mode; in color Doppler, it corresponds to a particular coiled configuration of the superior mesenteric vessels, with the vein winding around an axis centered on the artery ( 7 , 8 ). The “coffee bean” sign—a dilatation of a very short bowel segment that resembles a coffee bean—is another characteristic sign of volvulus ( 9 ).…”

Coffee bean sign: Its meaning and importance

“…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 1C). The two side parts of the bean represent the gas‐filled segments of the dilated bowel creating an inverted U‐shape, whereas the central cleft of the bean represents the double thickness of opposed bowel walls 1 . The presence of air within the bowel wall is a sign known as parietal pneumatosis and it is suggestive of bowel ischemia, whereas the presence of extraluminal air in the peritoneal cavity suggests bowel perforation.…”

“…The two side parts of the bean represent the gas-filled segments of the dilated bowel creating an inverted U-shape, whereas the central cleft of the bean represents the double thickness of opposed bowel walls. 1 The presence of air within the bowel wall is a sign known as parietal pneumatosis and it is suggestive…”