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• W2946681465 endingPage "49" @default.
• W2946681465 startingPage "45" @default.
• W2946681465 abstract "Purpose The purpose of this study is to identify predictors of tumor-positive surgical margins after breast-conserving surgery on dynamic contrast-enhanced (DCE) MRI. Materials and methods We conducted a retrospective study of consecutive women who underwent DCE MRI before breast-conserving surgery from 2005 to 2014. Patient demographics, indication for surgery, MRI findings, biopsy pathology results, and surgical outcomes were reviewed. The unpaired t-test and chi-square test were used to compare the positive and negative margins groups. Results 554 women (mean age, 56; range, 26–90) underwent DCE MRI before 575 breast-conserving surgeries for invasive carcinoma (n = 473) or ductal carcinoma in situ (DCIS) (n = 102). Positive margins requiring re-excision occurred in 19.7% (93/473) of surgeries for invasive carcinoma and 31.4% (32/102) of surgeries for DCIS. For invasive carcinoma surgeries, positive margins were more common when MRI demonstrated the finding of non-mass enhancement (NME) rather than the finding of enhancing mass (33.8% [22/65] versus 16.9% [61/360], p < 0.01). Tumor size on MRI was significantly larger in the positive margins group (2.5 cm versus 1.9 cm, p < 0.001). Positive margins were more common with invasive lobular rather than invasive ductal histology at core biopsy (38.3% [18/47] versus 16.0% [56/350], p < 0.001). For DCIS surgeries, there were no significant differences in positive margin rates related to MRI features. Conclusion For invasive carcinoma surgeries, positive margins are associated with NME on MRI, larger tumor size on MRI, and lobular histology at core biopsy. These findings may be used to predict which patients are at risk for positive margins after breast-conserving surgery." @default.
• W2946681465 created "2019-05-29" @default.
• W2946681465 creator A5032850952 @default.
• W2946681465 creator A5055835444 @default.
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• W2946681465 date "2019-09-01" @default.
• W2946681465 modified "2023-09-23" @default.
• W2946681465 title "MRI predictors of tumor-positive margins after breast-conserving surgery" @default.
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• W2946681465 doi "https://doi.org/10.1016/j.clinimag.2019.05.006" @default.
• W2946681465 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31128385" @default.
• W2946681465 hasPublicationYear "2019" @default.
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