Help me code for diagnosis year :
A diagnosis of "post essential thrombocythemia myelofibrosis" is a progression of essential thrombocythemia and would be the same primary.
The diagnosis is clinical (diagnosis of exclusion); the physician diagnoses this disease by excluding other myeloproliferative neoplasms and correlating those equivocal results with the patient's symptoms. Bone marrow and blood are the principle sites of involvement. The spleen does not show significant extramedullary hematopoiesis but is a sequestration site for platelets. In some cases this disorder may be progressive, and only rarely evolves into acute myeloid leukemia or myelofibrosis.
50-60% of patients will have a positive JAK2.
Aspirin, in low dose only (< 100 mg/day) is used as treatment for this disease.