State Key Laboratory of Oncology in South China;
Collaborative Innovation Center for Cancer Medicine;
Sun Yat-sen University Cancer Center;
Guang-zhou 510060;
Guangdong;
P.R.China.;
Department of Medical Oncology;
Sun Yat-sen University Cancer Center;
651 Dongfeng Road East;
Guang-zhou 510060;
Guangdong;
P.R.China.;
Department of Hematology Oncology;
Sun Yat-sen University Cancer Center;
Guangzhou 510060;
Guangdong;
P.R.China.;
Guangdong Province Key Laboratory of Arrhythmia and Elec-trophysiology;
Guangzhou 510120;
Guangdong;
P.R.China.;
Department of Radiotherapy;
Sun Yat-sen Memorial Hospital of Sun Yat-sen University;
Guangzhou 510120;
Guangdong;
P.R.China.;
Department of Colorectal Carci-noma;
Sun Yat-sen University Cancer Center;
Guangzhou 510060;
Guangdong;
P.R.China.;
Department of Pathology;
Sun Yat-sen University Cancer Center;
Guangzhou 510060;
Guangdong;
P.R.China.;
Department of Cancer Preven-tion Research;
Sun Yat-sen University Cancer Center;
Guangzhou 510060;
Guangdong;
P.R.China.;
Diffuse large B?cell lymphoma; Central nervous system relapse; Risk factor; Rituximab; Intrathecal chemotherapy prophylaxis;