May we routinely spare hippocampal region in primary central nervous system lymphoma during whole brain radiotherapy? oleh Ciro Mazzarella, Silvia Chiesa, Lucrezia Toppi, Stefan Hohaus, Simona Gaudino, Francesco D’Alo, Nicola Dinapoli, Resta Davide, Tiziano Zinicola, Serena Bracci, Antonella Martino, Francesco Beghella Bartoli, Elisabetta Lepre, Roberta Bertolini, Silvia Mariani, Cesare Colosimo, Vincenzo Frascino, Gian Carlo Mattiucci, Maria Antonietta Gambacorta, Vincenzo Valentini, Mario Balducci