Essential thrombocytemia progressing to Ph+ chronic myeloid leukemia with megakaryoblastic blasts, following anagrelide withdrawal. (December 2014) - Piccin, Andrea; Corvetta, Daisy; Rovigatti, Ugo; Mazzoleni, Guido; Pusceddu, Irene; Svaldi, Mirija; Steurer, Michael; Gastl, Günther; Cortelazzo, Sergio