Fig. 2

Kaplan-Meier OS and PFS curves for patients with ENKTCL categorized by primary site and regional lymph node involvement. a OS curves for patients with nasal and extra-nasal disease; b OS curves for patients with Ann Arbor stage IIE or IE disease (i.e., with or without regional lymph node involvement); c PFS curves for patients with nasal and extra-nasal disease; d PFS curves for patients with Ann Arbor stage IE or IIE disease