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Erschienen in: Breast Cancer Research and Treatment 3/2020

30.04.2020 | Clinical trial

A prospective cohort study to analyze the interaction of tumor-to-breast volume in breast conservation therapy versus mastectomy with reconstruction

verfasst von: Utku Dolen, Melissa Thornton, Marissa M. Tenenbaum, Allison Aripoli, Amy Patel, Amy E. Cyr, Yan Yan, Catherine M. Appleton, Julie A. Margenthaler, Terence M. Myckatyn

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

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Abstract

Purpose

We explored the impact of the relative volume of a tumor versus the entire breast on outcomes in patients undergoing breast conservation therapy (BCT) versus mastectomy and reconstruction (M + R). We hypothesized that there would be a threshold tumor:breast ratio (TBR) below which patient-reported outcomes (PRO) would favor BCT and above which would favor M + R.

Methods

We conducted a prospective cohort study of patients with ductal carcinoma in situ (DCIS) or invasive breast cancers undergoing BCT or M + R. A prerequisite for inclusion, analysis of tumor and breast volumes was conducted from three-dimensional magnetic resonance imaging reconstructions to calculate the TBR. Three-dimensional photography was utilized to calculate pre- and postoperative volumes and assess symmetry. Oncologic, surgical, and patient-reported outcome data were obtained from relevant BREAST-Q modules administered pre- and postoperatively.

Results

The BCT cohort had significantly smaller tumor volumes (p = 0.001) and lower TBRs (p = 0.001) than patients undergoing M + R overall. The M + R group, however, comprised a broader range of TBRs, characterized at lower values by patients opting for contralateral prophylactic mastectomy. Postoperative satisfaction with breasts, psychosocial, and sexual well-being scores were significantly higher in the BCT cohort, while physical well-being significantly favored the M + R cohort 480.2 ± 286.3 and 453.1 ± 392.7 days later, respectively.

Conclusions

Relative to BCT, M + R was used to manage a broad range of TBRs. The relative importance of oncologic and surgical risk reduction, symmetry, and number of procedures can vary considerably and may limit the utility of TBR as a guide for deciding between BCT and M + R.
Clinical Trial StatementThis study was registered with clinicaltrials.gov as “A Prospective Trial to Assess Tumor:Breast Ratio and Patient Satisfaction Following Lumpectomy Versus Mastectomy With Reconstruction”, Identifier: NCT02216136.
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Metadaten
Titel
A prospective cohort study to analyze the interaction of tumor-to-breast volume in breast conservation therapy versus mastectomy with reconstruction
verfasst von
Utku Dolen
Melissa Thornton
Marissa M. Tenenbaum
Allison Aripoli
Amy Patel
Amy E. Cyr
Yan Yan
Catherine M. Appleton
Julie A. Margenthaler
Terence M. Myckatyn
Publikationsdatum
30.04.2020
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/s10549-020-05639-w

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