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Published in: Breast Cancer Research and Treatment 2/2019

01-07-2019 | Mastectomy | Clinical trial

Breast desmoid tumor management in France: toward a new strategy

Authors: Ludwig Duazo-Cassin, Sophie Le Guellec, Amélie Lusque, Elodie Chantalat, Marick Laé, Philippe Terrier, Jean-Michel Coindre, Bérénice Boulet, Morwenn Le Boulc’h, Dimitri Gangloff, Thomas Meresse, Benoit Chaput, Amal Al Ali, Françoise Rimareix, Sylvie Bonvalot, Charlotte Vaysse

Published in: Breast Cancer Research and Treatment | Issue 2/2019

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Abstract

Purpose

Desmoid tumors (DTs) are rare tumors that originate from myofibroblastic tissue. Recently, initial wait and see was recommended (ESMO guidelines Ann Oncol 2017) in the most frequent locations. This study investigates the outcome of breast desmoid tumor (BDT) according to the initial strategy.

Method

Data from all consecutive patients treated from a BDT in four referral centers were collected. Only intra-mammary desmoid tumors were included. A pathological review and a molecular analysis (CTNNB1 gene mutation) were performed (National re-reading network of sarcomas-RRePS). Patients were grouped according to initial strategy: surgery group (SG) and active surveillance group (ASG).

Results

A total of 63 patients (61 women, 2 men) met the inclusion criteria. Median age was 50 years (16–86). CTNNB1 mutation was found in 61% (n = 36). SG included 46 patients (73%) (41 partial mastectomies, 2 mastectomies, and 3 mastectomies associated to parietectomies). Surgical margins were positive in 15 patients (33.3%). Median follow-up of SG was 24.9 (0.5–209) months; and 4 patients (8.7%) developed recurrence. ASG included 17 patients (27%). Their median follow-up was 42.2 (0–214) months, and 15 patients (88.2%) did not require any additional treatment. Six patients (35%) had a spontaneous regression, 9 patients (52%) were stable, and 2 patients presented a significant progression that was treated by partial mastectomy.

Conclusion

This study supports an initial nonsurgical approach to BDTs followed by surgery based on tumor growth in select cases, which is consistent with current ESMO recommendations.
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Metadata
Title
Breast desmoid tumor management in France: toward a new strategy
Authors
Ludwig Duazo-Cassin
Sophie Le Guellec
Amélie Lusque
Elodie Chantalat
Marick Laé
Philippe Terrier
Jean-Michel Coindre
Bérénice Boulet
Morwenn Le Boulc’h
Dimitri Gangloff
Thomas Meresse
Benoit Chaput
Amal Al Ali
Françoise Rimareix
Sylvie Bonvalot
Charlotte Vaysse
Publication date
01-07-2019
Publisher
Springer US
Published in
Breast Cancer Research and Treatment / Issue 2/2019
Print ISSN: 0167-6806
Electronic ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-019-05245-5

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