Survival curves. (A) Survival curves for age-related EBVLPD and EBV-positive cHL patients. Age-related EBVLPD showed a poorer prognosis than EBV-positive cHL. (B) Survival curves of patients with age-related EBVLPD stratified according to IPI score. (C) Survival curves of patients with age-related EBVLPD stratified according to the prognostic score of age-related EBVLPD. (D) Survival curves of patients with EBV-positive cHL stratified according to the IPFP score. (E) Survival curves of patients with EBV-positive cHL stratified according to the prognostic score of age-related EBVLPD.