failed to reach significanceP ≥ 0.1
In univariable analysis, all quantitatively derived PET parameters failed to reach significance ( P ≥ 0.1), and only PET/CT-based M1-status and Ki-67 were associated with increased mortality (M1: HR 13.89, 95% CI 4.15–86.32, P < 0.001; Ki-67 HR 1.29, 95% CI 1.16 – 1.42; P < 0.0001 ).