33 Outcomes of resected SST after CRT classified as ypT2a (VT0), ypT2a(VT1), ypT2a (VT3), respectively. We realize that the current recommendation for no vital tumour cells should be ypT0. Table 7. Proposed classification of the presence of vital tumour cells within a tumour after CRT % of vital tumour cells Notation (as superscript) 0 VT0 <10% VT1 10-50% VT2 > 50% VT3 VT vital tumor cells, CRT chemoradiotherapy In conclusion, we identified a pCR in over 40% of patients with SST undergoing induction CRT a complete or near-complete pathologic regression was associated with a more favorable prognosis. 2
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