Background: Essential thrombocythemia (ET) is a rare disease in which there an increase the platelet count of more than 450,000/mm3. An number platelets occurs due to increased proliferation megakaryocyte series. Although ET, it has impaired function. ET clinical manifestations 50% cases are asymptomatic, but symptomatic can be vascular occlusive events or microvascular thrombosis.
 Case p...
