Endoscopic Management of Urolithiasis in the Horseshoe Kidney.

Objective: To assess the endourologic outcomes of patients diagnosed with a horseshoe kidney (HK) and symptomatic urolithiasis.

Methods: A retrospective review was performed of patients diagnosed with an HK who underwent endoscopic management from 2002 to present.

Results: We identified 45 patients with 64 stone-bearing moieties who underwent 56 procedures, of which 31 (69%) were male.

Simultaneous vs staged treatment of urolithiasis in patients undergoing radical prostatectomy.

Aim: To assess the outcomes of men treated for urolithiasis at the time of radical prostatectomy.

Methods: From 1991 to 2010, 22 patients were retrospectively identified who were treated simultaneously (n = 10) at radical prostatectomy, or (n = 12) within 120 d prior to prostatectomy, for urolithiasis. Clinical characteristics were reviewed including: type of prostatectomy and stone surgery, location and amount of stone burden, perioperative change in hemoglobin and creatinine, stent frequency, total hospital d, stone-free rates, additional stone procedures and complications.

The change in upper tract urolithiasis composition, surgical treatments and outcomes of para and quadriplegic patients over time.

Stone disease in patients with spinal cord injury is a source of morbidity and mortality. Previous studies have indicated a decrease in infection-based urolithiasis in recent decades. We aimed to identify changes in stone composition and surgical outcomes in patients with para and quadriplegia over time.

Percutaneous ablation of renal masses measuring 3.0 cm and smaller: comparative local control and complications after radiofrequency ablation and cryoablation.

Objective: The purpose of this article is to compare the efficacy and complication rates of percutaneous radiofrequency ablation (RFA) and cryoablation in the treatment of renal masses measuring 3.0 cm and smaller.

Materials And Methods: A retrospective review was performed of 385 patients with 445 tumors measuring 3.

Urolithiasis after ileal conduit urinary diversion: a comparison of minimally invasive therapies.

Purpose: We report our experience with ureteroscopy, percutaneous nephrolithotomy and shock wave lithotripsy for symptomatic stone disease in patients with ileal conduit urinary diversion.

Materials And Methods: We retrospectively reviewed the charts of all patients treated with cystectomy and ileal conduit urinary diversion from 1982 to June 2010 in whom urolithiasis subsequently developed.

Results: We identified 77 patients with urolithiasis requiring surgical intervention after ileal conduit urinary diversion.

Complications following 573 percutaneous renal radiofrequency and cryoablation procedures.

Purpose: To review complications related to percutaneous renal tumor ablation.

Materials And Methods: Prospectively collected data related to renal radiofrequency (RF) ablation and cryoablation procedures performed from May 2000 through November 2010 were reviewed. This included 573 renal ablation procedures performed in 533 patients to treat 633 tumors.

Nephrolithiasis in medullary sponge kidney: evaluation of clinical and metabolic features.

Objective: Medullary sponge kidney (MSK) is a disorder characterized by tubular dilation of renal collecting ducts and cystic dilation of medullary pyramids that has been associated with stone disease. The significance of nephrolithiasis and the mechanisms by which it occurs are incompletely understood. We describe clinical and metabolic features of nephrolithiasis in a cohort of patients with MSK.

Percutaneous renal cryoablation: local control at mean 26 months of followup.

Purpose: We retrospectively determined the efficacy of percutaneous renal cryoablation based on a mean followup of more than 2 years.

Materials And Methods: Institutional review board approval was obtained for this Health Insurance Portability and Accountability Act compliant retrospective study. Informed consent was waived.

Percutaneous cryoablation of renal masses >or=3 cm: efficacy and safety in treatment of 108 patients.

Purpose: To evaluate our single institution experience with percutaneous cryoablation of renal masses >or=3 cm in diameter for complications and short-term outcomes.

Patients And Methods: Between March 2003 and February 2009, 108 patients with 110 renal masses >or=3 cm in diameter were treated with percutaneous cryoablation therapy. Technical success of the ablation procedure, complications, and evidence for local tumor recurrence were evaluated for each patient.

Percutaneous nephrolithotomy for large or multiple upper tract calculi and autosomal dominant polycystic kidney disease.

Purpose: Percutaneous nephrolithotomy is standard therapy for upper tract calculi larger than 2 cm. However, the role of percutaneous nephrolithotomy in patients with autosomal dominant polycystic kidney disease has not been well evaluated. We report our experience with percutaneous nephrolithotomy in patients with autosomal dominant polycystic kidney disease.

Fibroepithelial polyps of the ureter: a single-institutional experience.

Objective: Ureteral fibroepithelial polyps (UFP) are rare lesions that may mimic ureteral malignancy, and management is not well defined. We report our experience with the management of UFP.

Materials And Methods: Between 1945 and 2008, review of our clinical database identified 27 patients who were found to have UFP.

Percutaneous nephrolithotomy success in the transplant kidney.

Purpose: Treatment for symptomatic calculi in the transplanted kidney can be problematic. Percutaneous nephrolithotomy has routinely been used but concerns exist about potential injury to adjacent organs using a percutaneous access technique. We report our experience with percutaneous nephrolithotomy in the transplant kidney.

Radiofrequency ablation of renal tumors in the solitary kidney.

Objectives: Radiofrequency ablation (RFA) is a minimally invasive therapy aimed at maximal preservation of renal function in the nonsurgical renal mass patient. We evaluate our experience with RFA of renal tumors in the solitary kidney.

Patients And Methods: A retrospective review of all patients with a solitary kidney treated with RFA for renal mass was performed.

Elective endoscopic management of transitional cell carcinoma first diagnosed in the upper urinary tract.

Objective: To report our experience using ureteroscopic or percutaneous management of upper urinary tract (UUT) transitional cell carcinoma (TCC) in patients with no history of bladder TCC.

Patients And Methods: Between 1983 and 2004 we identified 22 patients who underwent endoscopic management of TCC first diagnosed in the UUT and in the setting of a normal contralateral kidney. We performed a retrospective chart review and conducted outcome analyses.

Long-term outcomes of percutaneous nephrolithotomy compared to shock wave lithotripsy and conservative management.

Purpose: Percutaneous nephrolithotomy is successful at achieving stone-free status but long-term safety data are lacking. We report our long-term experience with percutaneous nephrolithotomy and compare these results with other treatment modalities.

Materials And Methods: We identified 87 patients treated with percutaneous nephrolithotomy from 1983 to 1984 who continue to receive care at our institution.

Endoscopic management of upper tract transitional cell carcinoma in patients with normal contralateral kidneys.

Objectives: We report our experience using ureteroscopic or percutaneous management of upper tract transitional cell carcinoma (TCC) in elective situations.

Methods: Between 1983 and 2004 we identified 83 patients who underwent endoscopic management of upper tract TCC in the setting of a normal contralateral kidney. We performed a retrospective chart review and conducted outcome analyses.

Imperative indications for conservative management of upper tract transitional cell carcinoma.

Purpose: We report our experience with patients with imperative indications for endoscopic treatment for upper tract transitional cell carcinoma.

Materials And Methods: Between 1983 and 2004 we identified 37 patients with a solitary kidney, bilateral disease or preoperative creatinine greater than 2.0 mg/dl who underwent endoscopic treatment for localized upper tract transitional cell carcinoma.

Percutaneous cryoablation of large renal masses: technical feasibility and short-term outcome.

Objective: This retrospective study was performed to assess the feasibility, safety, and short-term outcome of percutaneous cryoablation of large solid renal tumors.

Materials And Methods: We reviewed 40 percutaneous cryoablation procedures performed on 40 patients with renal tumors 3 cm in diameter or larger. All patients underwent cryoablation with CT monitoring.

Endoscopic management of upper tract urothelial carcinoma in patients with a history of bladder urothelial carcinoma.

Purpose: Endoscopic management of renal pelvis and ureteral urothelial carcinoma is gaining acceptance as a conservative treatment modality. Patients with a history of bladder urothelial carcinoma are at high risk for upper tract recurrence. We evaluate the role of endoscopic management of upper tract urothelial carcinoma in patients with a history of primary bladder urothelial carcinoma.

Percutaneous cryoablation of 40 solid renal tumors with US guidance and CT monitoring: initial experience.

Purpose: To retrospectively determine the safety and effectiveness of percutaneous cryoablation, monitored with computed tomography (CT), for the treatment of solid renal masses.

Materials And Methods: This study was compliant with the Health Insurance Portability and Accountability Act and had institutional review board approval; informed consent was waived. From March 12, 2003, through August 4, 2005, 23 men and 17 women (mean age, 76 years +/- 9.

Long-term success of antegrade endopyelotomy compared with pyeloplasty at a single institution.

Background And Purpose: The classic standard for surgical repair of ureteropelvic junction (UPJ) obstruction has been open pyeloplasty, with a 95% success rate. Antegrade endopyelotomy is a less-invasive option with a slightly lower success rate. However, recent data call into question the long-term durability of UPJ repair.

Large congenital pelvic arteriovenous malformation and management options.

The congenital pelvic arteriovenous malformation (AVM) arises from dysplastic arteries and veins. These rare conditions might present to the urologist by producing massive hematuria. Most AVMs can be controlled by surgical resection, usually in conjunction with preoperative angiographic embolization.

The evolution of ureteroscopy: a modern single-institution series.

Objectives: To evaluate a modern ureteroscopy series, including the use of new technological advances, operative procedures, and potential complications, at a single institution and to compare our current experience with our prior published series and the current literature.

Material And Methods: We retrospectively reviewed 1000 consecutive ureteroscopies performed in 961 patients from December 1999 to February 2003 at our institution.

Results: Semirigid and flexible ureteroscopes were used in 60.

Diabetes mellitus and hypertension associated with shock wave lithotripsy of renal and proximal ureteral stones at 19 years of followup.

Purpose: SWL has revolutionized the management of nephrolithiasis and it is a preferred treatment for uncomplicated renal and proximal ureteral calculi. Since its introduction in 1982, conflicting reports of early adverse effects have been published. However, to our knowledge the long-term medical effects associated with SWL are unknown.