Hypoplastic kidney with persistent fetal lobulation
Hypertension. Referred to rule out renal artery stenosis.
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The left kidney is markedly smaller and supplied by a filiform left renal artery without irregularities or stenosis. A tiny accessory aberrant renal artery entering the lower third of the left kidney can only be identified on the source images of the CE MRA. There are regular indentations of the left kidney surface, at the borders of the renal lobes (Malphigi pyramids).