“…Badenoch, Bedford, and Evans (1955) have also commented upon the difficulties that may be encountered with radiography: sacs with small openings may not always fill with barium and small diverticula may be difficult to differentiate from adjacent loops of small intestine. Plain radiographs of the abdomen with the patient in an upright position may occasionally be diagnostic, or mimic intestinal obstruction, as pointed out by Butler in 1933, andstressed by Philips (1953), Stromme (1956), and Johnson and Wysor (1961).…”