Abdominal radiographs were obtained in 5 patients, with features of high obstruction in 2, a gasless abdomen in 1, and no detectable abnormality in the remaining 2.

• 5例病人做了腹部X线检查，其中2例有高位梗阻特征，1例为无气腹腔，其余2例没有发现异常。