Assessments
tumor, TRG
REGRESSION, TUMOR, RECURRENCE, METASTASIS
Data reflecting patient demographic details (age, sex); tumor clinicopathological characteristics (location, clinical and pathological stage, lymphovascular invasion, perineural invasion); surgical treatment characteristics (surgical interval, surgery type, distal surgical margin, circumferential margin (CRM), number of harvested lymph nodes), adjuvant chemotherapy; treatment response (PET-response [T stage, N stage]); pathological outcome, including pathological response (complete response [ypT0N0], downstaging [ypT0-2N0]) and Dworak score-based pathological tumor regression grade (TRG); and oncological outcome (local recurrence, distant metastasis, 5-year overall survival [OS] and disease-free survival [DFS]) were recorded in the LC-CRT and IC-CRT groups.