MRI restaging of rectal cancer: The RAC (Response–Anal canal–CRM) analysis joint consensus guidelines of the GRERCAR and GRECCAR groups

• DOI: 10.1016/j.diii.2023.02.002
• Publication Date: 2023-03-16T13:57:17Z
• Authors: Stephanie Nougaret; Pascal Rousset; Doenja M.J. Lambr...; Monique Maas; Kirsten Gormly; Oliver Lucidarme; Serge Brunelle; Laurent Milot; Lionel Arrivé; Celine Salut; Franck Pilleul; Constance Hordonneau; Guillaume Baudin; Philippe Soyer; Vanessa Brun; Valérie Laurent; Celine Savoye-Collet; Iva Petkovska; Jean-Pierre Gerard; Eddy Cotte; Philippe Rouanet; Onofrio Catalano; Quentin Denost; Regina Beets Tan; Nora Frulio; Christine Hoeffel
• Keywords: Consensus conference

To develop guidelines by international experts to standardize data acquisition, image interpretation, and reporting in rectal cancer restaging with magnetic resonance imaging (MRI).Evidence-based data and experts' opinions were combined using the RAND-UCLA Appropriateness Method to attain consensus guidelines. Experts provided recommendations for reporting template and protocol for data acquisition were collected; responses were analysed and classified as "RECOMMENDED" versus "NOT RECOMMENDED" (if ≥ 80% consensus among experts) or uncertain (if < 80% consensus among experts).Consensus regarding patient preparation, MRI sequences, staging and reporting was attained using the RAND-UCLA Appropriateness Method. A consensus was reached for each reporting template item among the experts. Tailored MRI protocol and standardized report were proposed.These consensus recommendations should be used as a guide for rectal cancer restaging with MRI.