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The Royal Marsden
MRI as a gold standard – why we
need to go beyond TNM
Prognostic/predictive item
Validation by modality?
EUS
MRI
T substage rather than T stage
no
yes
Detection of EMVI rather than N stage
no
yes
CRM status – should be a staging item
no
yes
Assessment of low rectal plane
no
yes
Reassessment after CRT
no
yes
Effective treatment stratification?
no
yes