Fig. 1

The RFS and OS curve according to Ann Arbor stage modified by Musshoff (a) and IPI score (b). The relapse-free survival (RFS) and overall survival (OS) curves according to Ann Arbor stage modified by Musshoff (a) and IPI score (b) show that these staging systems could define specific risk subgroups of patients with localized PG-DLBCL to some extent