Unusual Extramedullary Relapse after Haploidentical Bone Marrow Transplantation in a Patient with Acute Lymphoblastic Leukemiat

Yasuhiro Ebihara^1,2*, Shohei Yamamoto¹, Shinji Mochizuki^1,2, Masao Tsukada³, Yuki Taya³, Aki Sato³, Toshiro Kawakita³, Seiko Kato³, Jun Ooi³, Satoshi Takahashi³, Arinobu Tojo³ and Kohichiro Tsuji^1,2,4

¹Department of Pediatric Hematology/Oncology, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan

²Division of Stem Cell Processing, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan

³Department of Hematology/Oncology, Research Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan

⁴National Hospital Organization, Shinshu Ueda Medical Center, Ueda, Japan