Final results of a multicenter trial addressing role of CSF flow cytometric analysis in NHL patients at high risk for CNS dissemination by Giulia Benevolo, Alessandra Stacchini, Michele Spina, Andrés J. M. Ferreri, Marcella Arras, Laura Bellio, Barbara Botto, Pietro Bulian, Maria Cantonetti, Lorella Depaoli, Nicola Di Renzo, Alice Di Rocco, Andrea Evangelista, Silvia Franceschetti, Laura Godio, Francesco Mannelli, Vincenzo Pavone, Pietro Pioltelli, Umberto Vitolo, and Enrico M. Pogliani Blood Volume 120(16):3222-3228 October 18, 2012 ©2012 by American Society of Hematology Immunophenotyping and CC in a patient with DLBCL. FCM analysis shows the presence of 2 Bcell populations: one (black) of small polyclonal B lymphocytes and another (gray) of large monoclonal (κ-light chain positive) neoplastic B cells. Giulia Benevolo et al. Blood 2012;120:3222-3228 ©2012 by American Society of Hematology PFS, OS, and cumulative incidence of CNS relapse. Giulia Benevolo et al. Blood 2012;120:3222-3228 ©2012 by American Society of Hematology