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  • Title: Open dismembered tubularized flap pyeloplasty: an effective and simple operation for treatment of ureteropelvic junction obstruction.
    Author: Salehipour M, Khezri A, Azizi V, Kroup M.
    Journal: Urol Int; 2006; 76(4):345-7. PubMed ID: 16679838.
    Abstract:
    OBJECTIVE: To evaluate the success rate of dismembered tubularized flap pyeloplasty (DTFP) in the treatment of ureteropelvic junction obstruction (UPJO). PATIENTS AND METHODS: In a prospective study from August 2002 to September 2004, 15 patients with a mean age of 21 years (range 2-47) in whom UPJO had been diagnosed by sonography, excretory urography or diuretic renography and who had a large extrarenal pelvis, underwent operation via flank intercostal incision. The proximal ureter and renal pelvis were dissected and mobilized retroperitoneally, the site of UPJO was excised and the site of insertion of the ureter on the renal pelvis was closed with a stitch. A wide based renal pelvic flap was created and tubularized to bridge the upper ureteral defect. After insertion of a nephrostomy tube, a double-J tube was inserted as an internal ureteral stent and anastomosis of the tubularized flap to the spatulated upper ureter was done and the renal pelvis window was closed. Patients were followed 3, 6 and 12 months postoperatively. RESULTS: Mean operation time was 1 h and mean hospital stay was 3 days. The ureteral stent was removed 4 weeks after operation and at the same time a nephrostogram was done that showed a widely patent ureteropelvic junction with good renal pelvis drainage in 12 ( approximately 80%) of the cases, but in 3 cases (approximately 20%) passage of contrast materials was not seen. In these patients, methylene blue was injected via a nephrostomy tube and in 2 patients (14%) urine color turned blue 20 min later, but in 1 patient (7%) this test was also negative. The latter patient underwent percutaneous endopyelotomy later. Mean patient follow-up was 14 months. Follow-up excretory urography confirmed patent and unobstructed ureteropelvic junction in all patients. The overall success rate of DTFP was 93%. CONCLUSION: DTFP is a simple and effective procedure for patients with UPJO who have long or multiple upper ureteral strictures and a large extrarenal pelvis.
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