preoperative factors associated with underestimation of invasive breast cancer in stereotactic vacuum-assisted biopsy-diagnosed DCIS patients

Objective: To determine preoperative factors associated with underestimation of invasive breast cancer, where stereotactic vacuum-assisted biopsy (VAB) diagnosed as ductal carcinoma in situ (DCIS). Materials and Methods: Data from 95 patients diagnosed with DCIS by stereotactic VAB, including their clinical, radiological, and pathological findings between November 2010 and May 2021, were analyzed retrospectively. The clinical, radiological, and pathological features were analyzed. Results: The underestimation rate was 30.5 %. Three preoperative features were significantly associated with the underestimation of invasive breast cancer in multivariable analysis, including palpability (OR, 11.51; 95% CI: 1.817-72.897; P = 0.009), BI-RADS category (OR, 3.705; 95% CI: 1.214-11.303; P = 0.021), and visibility of a mammographically detected lesion at ultrasonography (OR, 7.115; 95% CI: 1.977-25.611; P = 0.003). The calcification morphology was statistically significant in an univariable analysis but not in a multivariable analysis. Conclusion: Preoperative variables significantly associated with underdiagnosis of invasive breast cancer, including palpability, BI-RADS category, and visibility of mammographically detected lesions at ultrasonography, could aid in assessing the risk of developing invasive breast cancer and conducting treatment selection.