题目内容
输尿管肿瘤超声特征的叙述，错误的是
2022-01-25
A.肿瘤为中低回声，边缘不规则
B.扩张的输尿管远端可探及实性肿块
C.良性肿瘤则管壁连续、薄且均勻
D.良恶性肿瘤与输尿管壁均分界不清
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