Fig. 5. Post-CRT mrTRG system. A

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Fig. 5. Post-CRT mrTRG system. A Fig. 5. Post-CRT mrTRG system.A. ESGAR-based complete response: completely normalized rectal wall in initial tumor site (arrow). B. mrTRG 1: linear/crescentic scar in mucosa/submucosal layer (arrow) which corresponds to ESGAR-based fibrotic wall thickening without clear mass. C. mrTRG 2: dense fibrotic transmural mass without intermediate tumor SI (arrow) which also corresponds to ESGAR-based fibrotic wall thickening without clear mass. D. mrTRG 3: more than 50% of areas with fibrosis and visible intermediate tumor (arrows) which corresponds to residual mass on ESGAR-based grading. E. mrTRG 4: few areas with fibrosis and mostly intermediate tumor SI (arrows) which also corresponds to residual mass on ESGAR-based grading. ESGAR = European Society of Gastrointestinal and Abdominal Radiology, mrTRG = MRI-based tumor regression grade Fig. 5. Post-CRT mrTRG system.A. ESGAR-based complete response: completely normalized rectal wall in initial tumor site (arrow). B. mrTRG 1: linear/crescentic scar in mucosa/submucosal layer (arrow) which corresponds to ESGAR-based fibrotic wall thickening without clear… Korean J Radiol. 2019 Jul;20(7):1003-1018. https://doi.org/10.3348/kjr.2018.0611