Tc-99m DMSA renal scan in polyarteritis nodosa with bilateral intraparenchymal renal artery aneurysms

Polyarteritis nodosa is a multisystemic disorder that results in various si gns and symptoms depending on the specific site of the blood vessel involve d. The disease affects the kidneys in 70% of cases, sometimes with aneurysm formation, which can result in perirenal and intrarenal bleeding. The auth ors describe a patient with polyarteritis nodosa with multiple bilateral an eurysmal dilatations confirmed by angiography. The Tc-99m DMSA renal scan r evealed bilateral intraparenchymal photopenic areas mimicking polycystic re nal disease.