Objective:

To investigate the diagnostic value of digital breast tomosynthesis (DBT) in benign and malignant breast diseases

and compare with the results of conventional full-field digital mammography (FFDM) and br

east ultrasound (US).

Methods:

A retrospective analysis was made of 67 patients between Jun. and Jul. 2019

all of whom received FFDM

DBT and US

and were confirmed by biopsy or operation pathology. The accuracy

sensitivity

specificity of DBT

FFDM and US for benign and malignant breast lesions were evaluated according to Breast Imaging Report and Data System (BI-RADS) score.

Results:

The diagnostic accuracy of DBT

FFDM and US for benign and malignant breast lesions were 85.07%

64.18% and 76.12%. The sensitivity was 90.32%

67.74%

83.87% respectively

and the specificity was 80.56%

61.11%

69.44% respectively. DBT

FFDM and US were evaluated for consistency with pathological results

and Kappa values were 0.70

0.28 and 0.52

respectively. Comparison of the sensitivity of different examination methods in the detection of malignant lesions: the difference between DBT and FFDM was statistically significant (

P

0.05); the difference between DBT and ultrasound and the difference between FFDM and ultrasound was not statistically significant (

P

0.05). Different inspection methods for detection of malignant change sensitivity comparison: The highest specificity of DBT

but the specificity of the three methods had no significant difference in statistics (

P

＞0.05).

Conclusion:

The sensitivity

specificity and accuracy of DBT in the diagnosis of benign and malignant breast lesions are higher than conventional FFDM and US

which are highly consistent with the pathological results. The sensitivity of malignant lesions evaluation is better than conventional FFDM

and DBT is a more sensitive examination method for breast cancer screening and diagnosis.