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【单选题】
某患儿突发剧烈腹痛伴恶心呕吐,以急腹症入院。腹部平片见肠内充满大量气体,A.
扩张，术中见肠套叠，肠管暗红，局部发黑坏死，表面无光泽该处可见纤维素样物质附着。该肠管发生了下列哪种病变
B.
静脉淤血
C.
动脉充血
D.
肠管梗死
E.
急性肠炎
F.
以上都不是
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