Color Doppler ultrasound in the diagnosis of breast tumors

Objective To analyze the characteristics of benign and malignant breast tumors with 2D and color Doppler ultrasound,and to assess the value of color Doppler ultrasound in the diagnosis of breast cancer.Methods A total of 674 patients(327 malignant and 347 benign) of breast tumor underwent 2D and color Doppler ultrasonogarphy.Two-dimensional ultrasound was used to observe the size,form,margin and internal echo of the tumors;color Doppler was performed to observe the degree of blood flow signal in the tumor,and to measure peak systolic velocity(PSV) and resistance index(RI).Results Totally 671 patients were diagnosed with ultrasound.The size of the tumors were from 0.50 cm×0.41 cm to 5.42 cm×4.10 cm.The ratio of vertical and transverse diameter of 69.11%(226/327) of the malignant tumors ≥1.0.Most tumors(266/327,81.35%) presented with irregular margin like incised or feet of crab;61.47%(201/327) had microcalcification.Color Doppler found that 92.97%(304/327) of the tumors had blood flow signal;PSV was 15.34—39.76 cm/s,RI was 0.65—0.98,and 91.61%(262/286)≥0.70.Significant differences of the ratio of vertical and transverse diameter,the margin of the tumor,microcalcification and blood flow signal,PSV and RI(P0.01) were found between benign and malignant breast tumors.Conclusion The diagnosis and differential diagnosis of benign and malignant breast tumors can be significantly improved with comprehensive analysis of 2D ultrasound,blood flow signal,PSV and RI.Color Doppler ultrasound plays an important role in the diagnosis of breast cancer.