【单选题】
男性，20岁，运动员，饱食后，进行操练，多次空翻突然腹痛、腹胀、恶心、呕吐，肛门无排气和排便，现腹部呈阵发性绞痛，腹部检查右腹有一肠襻，初步诊断___
A. 肠套叠
B. 肠扭转
C. 黏连性肠梗阻
D. 嵌顿疝
E. 肠肿瘤
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答案
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