Figure 1

Kaplan-Meier survival curves of PFS (left) and OS (right) by each type of treatment in the OED group. (A) By number of cycles of systemic chemotherapy (fewer than four versus four or more); (B) the use of rituximab; (C) surgery, and (D) radiotherapy. Abbreviations: PFS, progression-free survival; OS, overall survival; OED, one extranodal disease in the breast.