t options for primary myelofibrosis.Prognosis (chance of recovery) depends on the following:The age of the patient.The number of abnormal red blood cells and white blood cells.The number of blasts in the blood.Whether there are certain changes in the chromosomes.Whether the patient has signs such as fever, night sweats, or weight loss.Back to TopEssential ThrombocythemiaKey Points:Essential thromb