Prognostic impact of residual ductal carcinoma in situ following neoadjuvant chemotherapy for invasive breast cancer: a systematic review and meta-analysis
Introduction: Despite the definition of pathologic complete response (pCR) in the 8th edition of the AJCC Cancer Staging Manual as the absence of residual invasive disease after neoadjuvant chemotherapy (NAC), the prognostic significance of residual ductal carcinoma in situ (DCIS) remains uncertain. Objective: To asse...