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Presence of extensive intraductal component in patients undergoing breast conservative surgery predicts presence of residual disease in subsequent completion mastectomy

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Chinese Medical Journal 2009年第8期122卷 900-905页

作者： Christopher C. E Yiu Wings T. Y. Loo C. K. Lam Louis W. C. Chow UNIMED Medical Institute Comprehensive Centre for Breast Diseases Hong Kong China Clinical Trial Centre Li Ka Shing Faculty of Medicine University of Hong Kong China

Background Local recurrence remains a serious problem among patients undergoing breast conservative surgery. This study aimed at identifying risk factors for residual disease after breast conservative surgery. Methods This retrospective study was based on patients with invasive breast cancer who have received breast conservative surgery and subsequent completion mastectomy. All patients had a clear resection margin in the initial operation. We analyzed the association between the presence of residual disease during completion mastectomy and the following risk factors： T staging, young age, and presence of extensive intraductal component （EIC）, a close margin, lymphovascular permeation （LVP）, positivity of estrogen receptor, progesterone receptor, and c-erbB-2. Results Residual disease was encountered in 21 （45.7%） of 46 patients; EIC was present in 28 patients （60.9%）, of whom 17 had residual disease. Presence of EIC during breast conservation surgery was associated with a higher risk of residual disease during completion mastectomy （P=0.011）. Other variables were not statistically significant risk factors for presence of residual disease. No local recurrence was recorded in our cohort, and the disease-free survival and overall survival after completion mastectomy were similar for patients who had residual disease and those who had not. Conclusions The presence of EIC is a significant risk factor for residual disease in patients after breast conservative surgery. Our findings may suggest the indicated value of completion mastectomy in patients with EIC during initial breast conservative surgery to decrease the risk of subsequent local failure.

关键词： extensive intraductal component breast conservative surgery residual disease completion mastectomy

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