58 | wetenschapsdag 2023 Sessie 2a: Den Nederlanden - en Daar Voorbij x3 Auteurs E. Heeling, G. M. Kramer, J. H. Volders, I. M. C. van der Ploeg, M. J. Hoornweg, M. J. T. F. D. Vrancken Peeters Abstract title Snapshot study - DECIDE – Immediate Breast Reconstruction after Mastectomy in the Netherlands Background Annually, approximately 6.000 patients with invasive ductal carcinoma in situ (DCIS) or invasive breast cancer undergo a mastectomy in the Netherlands. Preserving the breast contour after a mastectomy can be achieved through immediate or delayed reconstruction and has a positive impact on the quality of life. Data from the National Breast Cancer Audit from 2020 demonstrates a large variation between Dutch hospitals in the application of immediate breast reconstruction (IBR). The aim of this study is to provide an updated overview of current incidence and decision-making process regarding IBR after mastectomy. Methods The DECIDE study is a national, multicenter SNAPSHOT study (www.decidestudie.com). Snapshot studies are an innovative form of collaborative research and have a hypotheses-generating design, without restraining too many in- or exclusion criteria. Thereby, snapshot studies generate a population-based overview, which rapidly provides insight in current clinical practice on a national scale. All hospitals providing breast cancer care in the Netherlands will be approached. Female patients undergoing a mastectomy with or without IBR for either DCIS or invasive breast cancer will be included for one year. Data concerning the indication for mastectomy, the reasons for (not) performing IBR, and the final advice for IBR will be collected. We evaluate the final breast contour preservation rate after 5 years. Results The primary outcomes are the incidence of IBR after mastectomy and the factors influencing the decisionmaking process regarding IBR. Secondary outcomes are short-term complications after 60 days and the final breast contour preservation rate after 5 years.
RkJQdWJsaXNoZXIy MTk4NDMw