Conclusion: The features of breast fibroadenoma were irregular, skin needling or crablike, exiguity calcify and rear active return loss, CDFI: RI>0.75.

• 结论：乳腺癌的特征性表现为形态不规则，毛刺状或蟹爪状，致密小钙化灶和后方回声衰减，CDFI：RI>0.；75。