Spontaneous resolution of severe hemorrhagic intrarenal pseudoaneurysm after percutaneous nephrolithotomy.

Received January 2010 Accepted February 2010 INTRODUCTION Percutaneous renal procedures have become an established approach for diagnosis and treatment of a number of renal pathologic lesions. Hemorrhage and vascular lesions are the most serious complications. The reported incidence of postoperative hemorrhage requiring selective angio-embolization for bleeding control is 1.2%.(1) Delayed bleeding after percutaneous procedures is almost always secondary to pseudoaneurysms or arteriovenous fistulas.(2) We report a case of pseudoaneurysm following percutaneous nephrolithotomy (PCNL) that caused recurrent episodes of severe hematuria after the operation, requiring embolization, but it resolved spontaneously.