题目内容
有关肠梗阻的CT表现，不正确的是：
2021-10-08
A.梗阻远近端肠管直径有明显差异
B.闭袢型肠梗阻时可见鸟喙状狭窄
C.动力性肠梗阻可见小肠大肠的弥漫性充气扩张
D.绞窄性肠梗阻肠壁可出现增厚改变
E.绞窄性小肠梗阻后期，结肠和直肠必然萎陷无气
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