Aggressive transformation of anaplastic large cell lymphoma with increased number of ALK-translocated chromosomes

Akihiro Hoshino^*, Keiko Nomura, Takeru Hamashima, Tomoya Isobe, Masafumi Seki, Mitsuteru Hiwatari, Kenichi Yoshida, Yuichi Shiraishi, Kenichi Chiba, Hiroko Tanaka, Satoru Miyano, Seishi Ogawa, Junko Takita, Hirokazu Kanegane