原发性骨髓纤维化(症)(primary myelofibrosis,MF)简称骨纤,为病因不明的骨髓弥漫性纤维组织增生症,常伴有髓外造血(或称髓外化生),主要在脾,其次在肝、淋巴结等。最近发现,骨髓内纤维组织增多与血小板衍生生长因子(platelet derived growth factor,PDGF)、巨核细胞衍生生长因子(megadaryocyte derived growth factor,MKDGF)、表皮生长因子(epith ilial growth factor,EGF)和转化生长因子β(t ......