Poster session 5: Nephrolithiasis| Volume 8, ISSUE 8, P683-684, September 2009

C77 Percutaneous nephrolithotomy (PNL) in the treatment of lithiasis developed on congenital renoureteral abnomalities – The 12 year experience of the Clinic of Urology, “Prof. Dr. Th. Burghele” Clinical Hospital, Bucharest, Romania

      Introduction and Objectives

      The lithiasis developed on congenital malformed kidney represents a special pathology because of the increased difficulty of the treatment and the postoperative evolution. The percutaneous nephrolititomy represents the most efficient treatment method of this disease, having also the best report costs-benefits. The paper is based on a large data base covering 12 years.

      Material and Methods

      We included 97 patients in our study (43 women and 54 men) (mean age of 46.8 years) with urolithiasis on kidney with congenital abnormalities, which we treated using percutaneous nefrolithotomy between January 1997–December 2008. The evaluation of the method was performed by taking into account the following facts: the congenital malformation of the kidney (pyelocaliceal duplicity 35, malrotated kidney 21, horseshoe kidney 23, primary ureteropelvic junction obstruction 18) the type of stone (single 61, multiple lithiasis 22, staghorn 14) and the effects of the lithiasis on the pyelocaliceal structure (no dilatation 25, hydronephrosis 50, hydrocalicosis 22).


      The rate of success of the method was 76.28%. Intraoperatory complications (23 – 23.72%) consisted in: failure of puncture – 9 cases; important bleeding – 7 cases; remaining stone fragments – 7 cases. Postoperatory complications (19 – 19.58%) were represented by: lumbar haematoma – 4, lumbar urinary fistula – 6 and acute pyelonephritis – 9.


      Percutaneous nephrolithotomy represents an important treatment method for urolithiasis on congenital malformed kidney, effective with a correct preoperatory evaluation and when is performed by an experienced surgeon.