Based on data from the US Surveillance, Epidemiology and End Result Program (SEER), the rates of nipple-sparing mastectomy (NSM) have risen 202% since 2009. In spite of the increasing popularity of IRMA, limited research has been done to identify complications in patients undergoing these procedures. Of particular importance is to assess the effects of combining the procedure with radiotherapy, and undergoing a one- versus two-step surgical procedure. Active monitoring and periodic assessment of IRMA patients are needed to establish the safety of these different techniques in terms of complications and recurrence rates. Identifying an optimal strategy for IRMA may lead to the development of clinical guidelines, which are currently lacking.
This is a multicenter observational, cohort study. The study is designed to serve a similar purpose as a disease registry. The only study-specific intervention will be the completion of the BREAST-Q quality-of-life (QoL) form. Only quantitative data will be collected. The rationale for this study design is to identify and describe the type and frequency of complications related to IRMA. No hypothesis is being tested. Although group comparisons based on surgical techniques will be made, conclusions based on these findings will be limited by the observational nature of the design. Data from patients will be collected using a series of pseudonymized case report forms, including the validated quality-of-life questionnaire: BREAST-Q. These data will be entered into the web-based data collection system, SecuTrial. A precise description of the surgical procedure will be required, as specified on the case report forms (e.g., implantation of a mesh, resection margins), to allow for subsequent multivariate analyses. During the first year of follow-up, data from routine clinical assessments and the QoL forms will be gathered at baseline (within 90 days after mastectomy), 6 and 12 months. Thereafter, data will be collected from annual clinical assessments and completion of the QoL form will be done for an additional four years (24, 36, 48 and 60 months postoperatively). Consequently, a total of five years of postoperative follow-up data will be collected to allow sufficient time for the development of the majority of foreseeable complications.
Study Type
OBSERVATIONAL
Enrollment
515
quality-of-life questionnaire: BREAST-Q
Kantonsspital Aarau AG
Aarau, Canton of Aargau, Switzerland
Kantonsspital Baden, Prof. Dr. med. Cornelia Leo
Baden, Canton of Aargau, Switzerland
Brustzentrum Bern Biel, Hirslanden
Bern, Canton of Bern, Switzerland
Centre du Sein de Genève - Hirslanden Clinique des Grangettes
Chêne-Bougeries, Canton of Geneva, Switzerland
Tumor- und Brustzentrum ZeTuP
Sankt Gallen, Canton of St. Gallen, Switzerland
Brustzentrum Ostschweiz
Sankt Gallen, Canton of St. Gallen, Switzerland
Tumor- und BrustZentrum Ostschweiz
Sankt Gallen, Canton of St. Gallen, Switzerland
Spital Wetzikon
Wetzikon, Canton of Zurich, Switzerland
Brust Centrum Zürich, Bethanien & Zollikerberg
Zollikerberg, Canton of Zurich, Switzerland
Stadtspital Triemli
Zurich, Canton of Zurich, Switzerland
...and 5 more locations
Rate of nipple-areola complex (NAC) or skin flap necrosis requiring specific treatment/surgery
Postoperative follow-up assessments include the documentation of nipple-areola complex (NAC) or skin flap necrosis
Time frame: Three years after surgery
Rate of infection requiring surgery
Postoperative follow-up assessments include the documentation of infections requiring surgery
Time frame: Three years after surgery
Grade of surgical complications
Postoperative follow-up assessments include the documentation of surgical complications (grading according to Clavien-Dindo Classification of Surgical Complications)
Time frame: Three years after surgery
Rate of minor complications not requiring surgery
Postoperative follow-up assessments include the documentation of skin necrosis outside NAC, wound dehiscence, and seroma requiring drainage
Time frame: Three years after surgery
Level of patient satisfaction with cosmesis
Postoperative follow-up assessment using BREAST-Q quality-of-life questionnaire that measures patient satisfaction with cosmetic outcome
Time frame: Five years after surgery
Level of sensitivity of the operated breast (NAC) compared to the non-operated breast
Postoperative follow-up assessments of breast functional outcomes
Time frame: Five years after surgery
Rate of breast cancer recurrence
Postoperative follow-up assessments include the documentation of recurrence in the NAC, skin flap outside the NAC, chest wall, locoregional lymph node (axillary, supraclavicular), distant metastasis
Time frame: Five years after surgery
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