题目内容
典塑胃平滑肌瘤的声像图特征是( )
2021-10-14
A.边缘光整的类圆形较均匀低回声肿块
B.形态不规则的外生性肿块
C.瘤体常大于5cm
D.绝大多数瘤内见坏死、出血
E.多数位于浆膜层,可向腔内或腔外生长
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