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乳腺癌mSMI及RTE表现注：女性,41岁。左侧乳腺发现低回声结节（箭头所指）,最大直径12 mm,实性,低回声,形态规则,边界清,边缘尚清,纵横比=1,内部无钙化,常规超声倾向于良性结节,ACR BI-RADS 4类。A. mSMI分型为Ⅴ型; B. RTE为4分,多模态超声成像评估为恶性结节,经手术病理被证实为三阴性乳腺癌