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Erschienen in: Breast Cancer Research and Treatment 3/2020

21.07.2020 | Epidemiology

Evaluating the impact of axillary dissection on recurrence-free survival by extent of nodal disease in invasive lobular carcinoma of the breast

verfasst von: Mary Kathryn Abel, Kelly Fahrner-Scott, Jasmine Wong, Michael Alvarado, Cheryl Ewing, Laura J. Esserman, Catherine Park, Rita A. Mukhtar

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 3/2020

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Abstract

Purpose

Clinical trials have shown that axillary lymph node dissection (ALND) can be avoided for many breast cancer patients with limited nodal involvement. However, whether its omission is safe for those with invasive lobular carcinoma (ILC) is still questioned. We sought to evaluate the impact of ALND on recurrence-free survival (RFS) by extent of nodal disease in patients with ILC.

Methods

We performed a retrospective, cross-sectional analysis of ILC patients treated between 1990 and 2019 at our institution. Patients underwent either breast conservation surgery (BCS) or mastectomy. We used univariate and multivariate statistics in Stata 14.2 to evaluate associations between extent of axillary surgery and time to recurrence stratified by nodal burden.

Results

Of 520 cases, 387 (78.4%) were node negative, 74 (14.9%) had 1–2 positive nodes, and 59 (11.4%) had three or more positive nodes. Most patients (93.3%) had hormone receptor-positive disease, and 94.8% had low or intermediate-grade tumors. The rate of ALND significantly decreased over time (p < 0.002). Using a multivariate model, there was no significant difference in RFS estimates based on receipt of ALND (HR = 0.53, 95% CI 0.17–1.64, p = 0.27), which also held true for patients with 1–2 positive nodes using a test of interaction (HR = 0.91, 95% CI 0.12–6.76, p = 0.92).

Conclusions

These findings support the safety of omitting ALND in selected patients with ILC. Further studies of axillary management in ILC and imaging tools to predict nodal involvement and therapeutic response are warranted.
Literatur
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Metadaten
Titel
Evaluating the impact of axillary dissection on recurrence-free survival by extent of nodal disease in invasive lobular carcinoma of the breast
verfasst von
Mary Kathryn Abel
Kelly Fahrner-Scott
Jasmine Wong
Michael Alvarado
Cheryl Ewing
Laura J. Esserman
Catherine Park
Rita A. Mukhtar
Publikationsdatum
21.07.2020
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 3/2020
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-020-05794-0

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