borderline significancep = 0.055
Univariate Cox regression analyses indicated that LN status and ADC75 of the tumor were significantly associated with tumor recurrence ( p = 0.024 and p = 0.012; hazard ratio [HR], 4.543 and 1.099, respectively), whereas MTD, mADC, and ADC50 showed borderline significance ( p = 0.055, p = 0.051 and p = 0.095, respectively).