Endovascular correction of renal artery stenosis of the solitary functioning kidney in a patient with essential thrombocythemia

Introduction . Renal artery stenosis is a common pathology associated mainly with atherosclerosis of the renal arteries. Essential thrombocythemia (ET) is a rare cause of renal artery stenosis. Aim : to describe a clinical observation of a patient with ET, complicated by renal artery stenosis of a solitary functioning kidney, successfully corrected endovascularly. Main findings . A 32-year-old male with ET, complicated by occlusion of the abdominal aorta, left renal artery, with shrinkage of the left kidney, subtotal stenosis of the right renal artery and chronic kidney disease stage 3A, as well as renovascular hypertension, underwent an organ-preserving intervention — endovascular correction of renal artery stenosis (ECRAS). As a result of ECRAS, the prescription of anticoagulant-antiplatelet therapy and specific therapy for ET with interferon, positive effects were observed in the form of improved kidney function, achievement of target blood pressure level, as well as in relation to basic hematological parameters.