The following are features of polycythemia rubra vera, except –
Correct Answer: Low aerial oxygen saturation
Description: <p>In PV, the major pathogenetic mechanism is a tyrosine kinase JAK2 mutation which removes the autoinhibitory control & activates the kinases.</p><p>Due to erythrocytosis, red cell mass will be increased .Splenomegaly produces abdominal fullness.But in PV, oxygen saturation will be high.</p><p>Reference :Harsh mohan textbook of pathology sixth edition pg no 359.</p>
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