Predictors of Reexcision following Breast-Conserving Surgery for Ductal Carcinoma In Situ

Lamb, Leslie; Mercaldo, Sarah; Oseni, Tawakalitu O.; Bahl, Manisha

doi:10.1245/s10434-020-09101-5

Cited by 11 publications

(1 citation statement)

References 27 publications

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“…We observed several factors that are significantly associated with positive resection margins. Whilst, in the analysis conducted by Lamb et al, age and the mode of biopsy (ultrasound vs. mammography vs. MRI) were associated with a higher risk of positive section margins in cases of DCIS and breast conserving therapy, this study could not confirm these findings [ 18 ]. However, the presence of DCIS in association with invasive malignancy significantly correlates with positive resection margins.…”

Section: Discussionmentioning

confidence: 80%

Retrospective Cohort Study of Practical Applications of Paramagnetic Seed Localisation in Breast Carcinoma and Other Malignancies

Clément

Schops

Nevelsteen

et al. 2022

Cancers

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(1) Background: Paramagnetic seeds are a safe alternative for the wire-guided localisation of non-palpable breast lesions, but can also be applied for non-breast lesions. This study presents the experience with a paramagnetic seed, MagSeed® (Endomagnetics Ltd., Cambridge, UK, CE-registered and FDA-cleared), in an academic and non-academic breast centre. (2) Methods: Multicentre, retrospective analysis of 374 consecutive patients who underwent surgery after paramagnetic seed localisation (MSL) between 2018 and 2020. Indications for localisation included non-palpable breast lesions (n = 356), lymph nodes (n = 15) or soft tissue lesions (n = 3). The primary outcome was feasibility and the rate of positive section margins. The secondary outcome was predictive factors for positive section margins. (3) Results: The accurate excision of high-risk breast lesions, lymph nodes and soft tissue lesions was seen in 91.07% (n = 56). Positive section margins were observed in 7.86% (n = 25) after breast conserving surgery for invasive or ductal carcinoma in situ (DCIS) (n = 318). Invasive breast cancer associated with DCIS (p = 0.043) and the size of DCIS (p < 0.001) were significantly correlated with the positive section margins. (4) Conclusion: This study confirms the feasibility of MSL, as well as the higher risk for positive margins in cases of breast carcinoma with associated DCIS. Soft tissue lesions and lymph nodes associated with other malignancies, e.g., melanoma, can also be localised with paramagnetic seeds. This offers perspectives for future applications, such as the de-escalation of axillary treatment in breast cancer.

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Section: Discussionmentioning

confidence: 80%