What is the diagnosis?
"Coffee bean sign" is one of sigmoid volvulus, what is another plain radiograph sign?
Frimann Dahl's sign - three dense lines converge towards site of obstruction.
Grossly-dilated loop of large bowel has a 'coffee-bean shape' and the descending colon tapers in its inferior portion in keeping with a sigmoid volvulus. Air-fluid levels on erect projection.