coffee bean sign

A classic finding in a patient with a sigmoid volvulus—the involved bowel wall is oedematous, and the contiguous walls form a dense white line on plain films of the abdomen. This line is surrounded by the curved and dilated gas-filled lumen, resulting in a coffee bean-shaped structure

coffee bean sign

A radiologic sign consisting of a greatly distended, air-filled loop of sigmoid colon extending from the pelvis on abdominal radiography. The apposed medial walls of the dilated bowel form a distinct oblique line that resembles the cleft of a coffee bean. The coffee bean arises from the pelvis and may be very large, with its apex often extending above the level of T10 to the left or right of the midline. This sign is characteristic of sigmoid volvulus.
References in periodicals archive ?
Sigmoid volvulus presents as an inner tube or with a coffee bean sign with convexity to the right upper quadrant (RUQ) (opposite side of the obstruction).
An abdominal X-rays was obtained, in which the coffee bean sign was observed with convexity to the diaphragm (Figure 1a).
His abdominal X-ray showed the coffee bean sign in the RUQ section with upward convexity (Figure 2a).
Turkdogan, "Coffee bean sign, whirl sign and bird's beak sign in the diagnosis of sigmoid volvulus," The Pan African Medical Journal, vol.
Wu, "Acute abdomen with coffee bean sign," Emergency Medicine Journal, vol.
(81) The coffee bean sign has also been used to describe small-bowel, closed-loop obstructions.