Fig. 2

Kaplan–Meier analysis estimated central nervous system (CNS) relapse-free survival for the 511 diffuse large B-cell lymphoma (DLBCL) patients stratified by independent risk factors. A low albumin (ALB) level at diagnosis (a), a high alkaline phosphatase (ALP) level (b), bone involvement (c), renal involvement (d), a lack of rituximab treatment (e), and a long time to complete remission (TTC) (f) were associated with short CNS relapse-free survival