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[Malignant hypertension in a young man with renal artery occlusion diagnosed with magnetic resonance angiography].

A male aged 22 years developed a hypertensive crisis with encephalopathy after his antihypertensive medication had been discontinued with a view to extended diagnostics. Immediate intensive treatment led to rapid and complete recovery. By using gadopentetate acid enhanced magnetic resonance angiography it is possible to obtain a clear image of the morphology of the kidneys and the renal vasculature without the use of iodinated contrast media and arterial catheterisation. This technique revealed an occluded renal artery and a recent infarction that possibly had led to the serious and threatening events.