Guest Editors: Mark Roschewski (Clinical Director, Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA); Carla Casulo (Associate Professor of Medicine, Director of the Hematology/Oncology Fellowship Program, University of Rochester, Rochester, NY, USA)

Guest Editors: Andrés J. M. Ferreri (Lymphoma Unit, Department of Onco-Hematology, IRCCS San Raffaele Scientific Institute, Milano, Italy); Maurilio Ponzoni (Pathology Unit, IRCCS San Raffaele Scientific Institute; Università Vita e Salute, IRCCS San Raffaele Scientific Institute, Milano, Italy)