Polyarteritis and Intrarenal Renal Artery Aneurysms

Abstract
The diagnosis of polyarteritis nodosa is frequently difficult. Renal biopsy is often hazardous due to severe hypertension or azotemia. Renal arteriographic changes described herein are considered specific for polyarteritis nodosa. These include intrarenal renal artery aneurysms confined to the distal segmental, interlobar, and occasionally the arcuate arteries.

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