Acute Severe Renal Artery Stenosis Presenting as Acute Kidney Injury With Severe Hypertension and Active Urine Sediment.

We present a case of severe renal artery stenosis that mimicked rapidly progressive glomerulonephritis with acute kidney injury, active urine sediments, and severe hypertension. Simultaneous presence of secondary hyperaldosteronism and hypokalemia prompted renal angiography and subsequent renal artery angioplasty and stenting, leading to rapid resolution of acute kidney injury, proteinuria, and hypertension. This case emphasises the importance and benefits of prompt diagnosis and revascularisation of acute severe renal artery stenosis in a patient with history of atherosclerotic renovascular disease presenting with sudden onset of severe hypertension and acute kidney injury with active urine sediment mimicking rapidly progressive glomerulonephritis.