ĐẶC ĐIỂM HÌNH ẢNH CỦA TỔN THƯƠNG KHÔNG TẠO KHỐI TRÊN X-QUANG SỐ HÓA CẮT LỚP TUYẾN VÚ

Abstract

Background: Digital breast tomosynthesis (DBT) has been developed to overcome the limitations of digital mammography by providing clearer depiction of breast structures and reducing tissue overlap, which improves diagnostic accuracy in breast cancer detection. Objective: To describe the imaging features of non-mass lesions on digital breast tomosynthesis (DBT). Methods: A retrospective cross-sectional descriptive study was conducted on 70 patients presenting with suspicious breast findings such as microcalcifications, architectural distortion, or focal asymmetry on digital breast tomosynthesis (DBT), with or without histopathological confirmation. Lesion imaging features were described, and breast lesions were classified according to their DBT characteristics. Results: The patients’ ages ranged from 28 to 72 years. Dense breast tissue (categories C and D) accounted for the majority of cases, with category C being the most common (97.1%) and category D accounting for 2.9%. The most frequent imaging finding was focal asymmetry (45.7%), followed by architectural distortion (40%) and suspicious microcalcifications (14.3%). Among microcalcification patterns, amorphous or pleomorphic types were predominant (70%), and clustered distribution was most common, observed in 60% of cases. Conclusion: Non-mass lesions on digital breast tomosynthesis (DBT) include suspicious microcalcifications, architectural distortion, and focal asymmetry.