Prognostic impact of procarbazine in R-MPV followed by reduced-dose whole-brain radiotherapy and cytarabine for primary central nervous system lymphoma. - Matsumoto, Shuhei; Kurihara, Yuya; Masuda, Yasutaka; Nara, Katsuhiko; Yuasa, Mitsuhiro; Honda, Akira; Takada, Tappei; Kurokawa, Mineo (Leukemia & Lymphoma, 2026)