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.