Four independent prognostic factors were identified by multivariate analysis of both preoperative and postoperative factors : pathological curability B ( pB ; R@ with stage IV or pD < pN ) or pC -LSB- microscopic or macroscopic residual tumor ( R@/R@ ) -RSB- -LSB- vs. pA ( R@ ) ; HR @ , p = @ -RSB- , pathological stage N@ ( vs. pN@ ; HR @ , p = @ ) , cT@ ( vs. cT@-@ ; HR @ , p = @ ) , and serum Alb < @ g/dl ( vs. @ g/dl ; HR @ , p = @ ) .