TOPIC: Critical Care TYPE: Medical Student/Resident Case Reports INTRODUCTION: Polycythemia Vera (PV) is a chronic myeloproliferative disorder that affects the hematopoietic progenitor cells and increases production of red cells, platelets granulocytes1. The incidence PV around 2.3 per 100,000 persons/year2. Major cause morbidity mortality in patients thrombosis either microcirculatory or arter...