Takafumi Tsushima, Rikako Tabata, Ayumi Kuzume, Toshiki Terao, Daisuke Miura, Akihiro Kitadate, Kentaro Narita, Masami Takeuchi, Kosei Matsue (Department of Hematology/Oncology, Kameda Medical center, Kamogawa-shi, Chiba, Japan)

Kenjiro Mitsuhashi, Moegi Kurachi, Yusuke Komiya, Hiroyuki Sato, Shigeru Hoshino (Department of Hematology, Saitama Red Cross Hospital, Saitama, Japan)

Yusuke Komiya, Moegi Kurachi, Kenjiro Mitsuhashi, Hiroyuki Sato, Shigeru Hoshino (Department of Hematology, Saitama Red Cross Hospital)

Kentaro Narita¹, Ikuo Yamazaki², Toshihiro Ouchi², Hiroki Kobayashi¹, Akihiro Kitadate¹, Yoshiaki Abe¹, Daisuke Miura¹, Takafumi Tsushima¹, Masami Takeuchi¹, Kosei Matsue¹ (1.Division of Hematology/Oncology, Kameda Medical Center Chiba, Japan, 2.Department of Radiology Kameda Medical Center Chiba, Japan)

Kana Nagashima¹, Shohei Kikuchi¹, Chisa Fujita¹, Akari Goto¹, Hiroto Horiguchi¹, Hiroshi Ikeda¹, Satoshi Iyama¹, Masayoshi Kobune¹, Akihito Fujimi² (1.Department of Hematology, Sapporo Medical University School of Medicine, 2.Department of Hematology, Sapporo Kiyota Hospital)

Jun Takiguchi¹, Hisayuki Murai², Miho Sakai³, Mayuko Okada³, Ayae Saiki³, Toshimasa Shin², Atsushi Fujikawa², Fuyuaki Ide², Hiroshi Nakamura², Setsu Sawai⁴, Takahiro Makino⁴, Ikuo Kamitsukasa⁴, Isamu Sugano⁵, Ryuukou Chou¹ (1.Hematology, Chibakensaiseikainarashino hospital, Chiba, Japan, 2.Neurosurgery, Chibakensaiseikainarashino hospital, Chiba, Japan, 3.Junior resident, Chibakensaiseikainarashino hospital, Chiba, Japan, 4.Neurology, Chibakensaiseikainarashino hospital, Chiba, Japan, 5.Pathology, Chibakensaiseikainarashino hospital, Chiba, Japan)