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Kaplan-Meier survival analysis. (A) Histology was not shown to be a prognostic factor for 5-year disease-free survival. (B) Patients were classified into four separate groups based on histology and histology-specific correlates (Dissimilarity for SCC and SUVmean for AC). Here, histology-specific median values reported in Table 4 were used for dichotomizing patients into low (−) or high (+) groups. SCC, squamous cell carcinoma; SUV, standardized uptake value; AC, adenocarcinoma.
