Myelofibrosis classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Mohamad Alkateb, MBBCh [2], Sujit Routray, M.D. [3]

Classification

Based on the origin, myelofibrosis may be classified into two subtypes: primary and secondary.

• Primary myelofibrosis indicates that the disease is of unknown or spontaneous origin.
• Secondary myelofibrosis develops secondary to polycythemia vera, essential thrombocythaemia, leukemia, or lymphoma.