Thrombocytapheresis in Patient with Essential Thrombocythemia: A Case Report.

Essential thrombocythemia (ET) is one of the myeloproliferative neoplasms, characterized by persistent thrombocytosis, platelets >450,000/µL, and evident clonal abnormalities like JAK2 V617F, MPL, CALR mutation and not fulfilling WHO criteria for MDS, CML, PV, and IDA. Here we report a 24-year-old female who presented with headache and was found to have thrombocytosis with a platelet count of 2,141 × 103/µL, diagnosed as ET as per WHO criteria 2008; she required ICU admission and thrombocytapheresis with a favorable outcome.