P1220: CHARACTERISTICS OF SECONDARY CENTRAL NERVOUS SYSTEM INVOLVEMENT IN PATIENTS WITH DIFFUSE LARGE B-CELL LYMPHOMA – A SUPPLEMENTARY ANALYSIS OF JCOG0601. (23rd June 2022) - Shimada, K.; Ohmachi, K.; Machida, R.; Ota, S.; Itamura, H.; Tsujimura, H.; Takayama, N.; Shimada, T.; Kurosawa, M.; Tabayashi, T.; Shimoyama, T.; Ohshima, K.; et al.