Beyond atherosclerosis: Polycythemia Vera presenting as ST-elevation Myocardial Infarction- a case report

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2026
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Abstract
Abstract Background Polycythaemia vera (PV) is a myeloproliferative neoplasm characterised by erythrocytosis, hyperviscosity, and increased thrombotic risk. Although arterial thrombosis is well recognised, acute myocardial infarction as the initial manifestation is uncommon and may be overlooked, particularly in patients without traditional cardiovascular risk factors. Early diagnosis is important, as management differs from standard ST-elevation myocardial infarction (STEMI) care and requires disease-directed therapy. Case Summary A previously healthy middle-aged woman presented with acute chest pain and electrocardiographic features of anterior STEMI. Emergency coronary angiography demonstrated a large thrombotic occlusion of the proximal left anterior descending artery without significant underlying atherosclerotic disease. Primary percutaneous coronary intervention with drug-eluting stent implantation restored TIMI III flow. Subsequent laboratory evaluation revealed marked erythrocytosis with haemoglobin of 20.2 g/dL and haematocrit of 64%, prompting evaluation for a myeloproliferative disorder. Molecular testing confirmed JAK2 V617F-positive polycythaemia vera. Secondary prevention included dual antiplatelet therapy, therapeutic phlebotomy, and cytoreductive therapy with hydroxyurea. The patient had an uneventful recovery and remained clinically stable at 6-month follow-up. Discussion Polycythaemia vera is an uncommon cause of acute myocardial infarction, typically presenting with extensive intracoronary thrombus despite minimal underlying atherosclerosis. Reported cases, including the present one, show a recurring pattern of STEMI in relatively young patients without conventional cardiovascular risk factors. Long-term outcomes depend on integration of standard acute coronary syndrome therapy with disease-specific cytoreductive strategies to reduce recurrent thrombosis. This case reinforces that acute coronary syndromes should not be routinely attributed to atherosclerotic disease when clinical and angiographic features are disproportionate to traditional risk profiles.
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Authors Asharam Panda, Sumit Kumar, S S Mishra
Journal European Heart Journal - Case Reports
Year 2026
DOI
10.1093/ehjcr/ytag350
URL
https://doi.org/10.1093/ehjcr/ytag350
Keywords Keywords not found

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