Kaplan-Meier curve of progression-free survival (PFS) in patients with primary ocular adnexal MALT lymphoma, according to Ann Arbor stage. (A) Five-year PFS 77.4% versus 52.5% for patients with limited- versus advanced-stage disease (P=0.063). (B) Five-year OS 96.0% versus 81.7% for patients with limited- versus advanced-stage disease (P=0.123).