Abstract P4-09-02: The impact of breast conserving surgery re-excision on patient-reported outcomes using the BREAST-Q
Authors: Matar Regina , Flanagan Meghan , Fuzesi Sarah , Haglich Kathyrn , Yin Shen , Sevilimedu Varadan , Nelson Jonas , Gemignani Mary L. 
Published: March 2022

Introduction: Although SSO/ASTRO consensus margin guidelines have led to decrease rate of re-excision, some women require additional surgery. Re-excision surgery may cause psychosocial stress and impact cosmetic outcomes and breast satisfaction. The purpose of this study was to assess patient-reported outcomes using the BREAST-Q breast satisfaction, psychosocial wellbeing, and sexual wellbeing subscales for women with breast cancer following index breast-conserving surgery (BCS). Methods: Women with stage 0 to 3 breast cancer undergoing BCS who completed a BREAST-Q from 2010 to 2016 were identified by retrospective review of a prospective database. The BREAST-Q breast conserving therapy module was used to assess outcomes between women with 1 BCS and those with ≥1 re-excision surgery (R-BCS). Baseline characteristics were compared, and linear mixed models were used to analyze associations with BREAST-Q scores over time. Results: Our study group was initially composed of 2570 women that was narrowed to 2549 women after excluding 21 who ultimately underwent mastectomy; 1982 (78%) had 1 BCS and 567 (22%) had ≥1 R-BCS. The median age of the cohort was 57 years (range 26-97). Women with 1 BCS were more likely to be older (p&lt;0.001), have a higher BMI (p=0.01), present with invasive carcinoma (p=0.03), have unifocal disease (p&lt;0.001), undergo surgery post-release of SSO Invasive Guidelines (p&lt;0.001), receive endocrine therapy (p=0.006), and less likely to receive radiation therapy (p=0.02) compared to those with ≥1 R-BCS. At 2-years post-operative, women with ≥1 R-BCS compared to 1 BCS were noted to have lower average breast satisfaction and sexual well-being scores (76.0 vs. 71.8 [p=0.03] and 70.2 vs. 64.0 [p=0.01], respectively). No difference in psychosocial well-being scores existed for up to 5 years of post-operative follow-up. Multivariable linear regression confirmed that undergoing ≥1. R-BCS is a risk factor for decreased breast satisfaction and sexual well-being at 2 years postoperative. On multivariable analysis, re-excision was found to be associated with lower breast satisfaction and sexual well-being scores. (p=0.01 and p=0.02, respectively), while it was not associated with a change in psychosocial wellbeing score (p=0.07). Factors such as Race, BMI, and marital status were not associated with any difference across all subscales (all p&gt;0.1). Chemotherapy and radiotherapy were associated with lower scores across all subscales (Table). Younger age was associated with lower psychosocial and sexual well-being scores (both p&lt;0.001), and endocrine therapy was associated with a lower sexual well-being score (p=0.01). Conclusions: Psychosocial well-being in women with 1 BCS for breast cancer were largely comparable over time to those who underwent ≥1 R-BCS. At 2 years post-operative, women with 1-BCS had lower breast satisfaction and sexual well-being, but this difference did not remain at later time periods. These findings may help in counseling women who are concerned of satisfaction and quality of life outcomes with BCS if breast re-excision was necessary.

Multivariable analysis of BREAST-Q Subscale scoresEstimateStandard Errorp valueBreast SatisfactionAge at surgery-0.0690.0480.147BMI-0.1380.0810.088Chemotherapy-2.5421.0260.015Adjuvant radiation-3.4371.5830.031Hormonal therapy-0.6511.1700.119≥1 R-BCS vs. 1 BCS-2.5420.8840.008Psychosocial well-beingAge at surgery0.1980.043&lt;0.001BMI-0.079-0.0790.287 Chemotherapy-3.2090.9330.001Adjuvant radiation-4.5091.4600.004Hormonal therapy0.2081.0740.528≥1 R-BCS vs. 1 BCS-1.4450.7930.059Sexual well-beingAge at surgery0.2700.072&lt;0.001BMI-0.1140.1180.337Chemotherapy-4.7131.428&lt;0.001Adjuvant radiation-7.6292.493&lt;0.001Hormonal therapy-1.1801.7080.008≥1 R-BCS vs. 1 BCS-2.9661.2190.015

Citation Format: Regina Matar, Meghan Flanagan, Sarah Fuzesi, Kathyrn Haglich, Shen Yin, Varadan Sevilimedu, Jonas Nelson, Mary L. Gemignani. The impact of breast conserving surgery re-excision on patient-reported outcomes using the BREAST-Q [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr P4-09-02.