A retrospective observational study of intraductal breast papilloma and its coexisting lesions: a real- world experience Xiaoyun Mao the 1st aliated hospital of China Medical University Huan Wang the 1st aliated hospital of China Medical University Zhe Sun the 1st aliated hospital of China Medical University Chuifeng Fan China Medical University Feng Jin (
[email protected] ) the 1st aliated hospital of China Medical University Research article Keywords: intraductal breast papilloma, real-world experience Posted Date: September 6th, 2019 DOI: https://doi.org/10.21203/rs.2.14000/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Page 1/22 Abstract Background: Breast intraductal papilloma are a heterogeneous group. The aim of this study is to investigate the intraductal breast papilloma and its coexisting lesions retrospectively in real-world practice. Methods: We retrospectively identied 4450 intraductal breast papilloma and its coexisting lesions. Results: 18.36% coexisted with malignant lesions of the breast, 37.33% coexisted with atypia hyperplasia, 25.24% coexisted with benign lesions and only 19.10% coexisted without concomitant lesions. In addition, 36.80% of intraductal breast papilloma had nipple discharge, 51.46% had a palpable breast mass and 16.45% had both nipple discharge and a palpable breast mass. 28.18% experienced discomfort or were asymptomatic. Furthermore, 98.99% had ultrasound abnormalities, 53.06% had intraductal hypoechoic upon ultrasound. 31.89% had mammographic distortion, 14.45% had microcalcication upon mammography. Intraductal breast papilloma with malignancy had signicant correlations with clinical manifestations. Conclusion: Coexisting malignancy was also related to ultrasound abnormality (BIRADS 4C and 5), mammographic distortion and microcalcication upon mammography but was not related to the intraductal hypoechoic upon ultrasound.