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Practice Guideline
. 2022 Mar;103(3):127-141.
doi: 10.1016/j.diii.2021.08.003. Epub 2021 Nov 15.

Structured and shared MRI staging lexicon and report of rectal cancer: A consensus proposal by the French Radiology Group (GRERCAR) and Surgical Group (GRECCAR) for rectal cancer

Stephanie Nougaret  1 , Pascal Rousset  2 , Kirsten Gormly  3 , Oliver Lucidarme  4 , Serge Brunelle  5 , Laurent Milot  6 , Cécile Salut  7 , Franck Pilleul  8 , Lionel Arrivé  9 , Constance Hordonneau  10 , Guillaume Baudin  11 , Philippe Soyer  12 , Vanessa Brun  13 , Valérie Laurent  14 , Celine Savoye-Collet  15 , Iva Petkovska  16 , Jean Pierre Gerard  17 , Eric Rullier  18 , Eddy Cotte  19 , Philippe Rouanet  20 , Regina G H Beets-Tan  21 , Nora Frulio  7 , Christine Hoeffel  22
Affiliations
Practice Guideline

Structured and shared MRI staging lexicon and report of rectal cancer: A consensus proposal by the French Radiology Group (GRERCAR) and Surgical Group (GRECCAR) for rectal cancer

Stephanie Nougaret et al. Diagn Interv Imaging. 2022 Mar.

Abstract

Purpose: To develop French guidelines by experts to standardize data acquisition, image interpretation, and reporting in rectal cancer staging with magnetic resonance imaging (MRI).

Materials and methods: Evidence-based data and opinions of experts of GRERCAR (Groupe de REcherche en Radiologie sur le CAncer du Rectum [i.e., Rectal Cancer Imaging Research Group]) and GRECCAR (Groupe de REcherche en Chirurgie sur le CAncer du Rectum [i.e., Rectal Cancer Surgery Research Group]) were combined using the RAND-UCLA Appropriateness Method to attain consensus guidelines. Experts scoring of reporting template and protocol for data acquisition were collected; responses were analyzed and classified as "Recommended" versus "Not recommended" (when ≥ 80% consensus among experts) or uncertain (when < 80% consensus among experts).

Results: 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.

Conclusion: These consensus recommendations should be used as a guide for rectal cancer staging with MRI.

Keywords: Magnetic resonance imaging; Neoplasm staging; Protocol compliance; Rectal cancer; Rectal neoplasms.

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