Immune thrombocytopenic purpura with subsequent development of JAK2 V617F-positive essential thrombocythemia: Case Report

Marisabel Hurtado-Castillo*, Brian Flaherty and Morris Jrada

The sequential occurrence of Immune Thrombocytopenic Purpura (ITP) and Essential Thrombocythemia (ET) has been reported in the literature on a few occasions, as these are two hematologic disorders with distinct etiologies and patients usually have contrasting clinical presentations. Our case highlights the sequential occurrence of ITP, followed by Janus kinase 2 (JAK2) (V617F)-positive ET in a 64-year-old white woman, after four years of follow-up. The pathophysiology relating to these two conditions is incompletely understood, however, JAK2(V617F) mutation has been found in all the cases reported. Early identification of JAK2(V617F) mutation in a patient with a past medical history of ITP and presenting with thrombocytosis, may lead to a prompt diagnosis of ET and timely treatment initiation.

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Published on: Aug 4, 2021 Pages: 18-20

Full Text PDF Full Text HTML DOI: 10.17352/ahcrr.000033
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