Anesthetic Considerations During Endourologic Surgery,Difficulties in Instrumentation of Endourologic Procedures,Percutaneous Management of Calyceal Diverticula: An American Experience,Managing Bleeding During Percutaneous Renal Surgery, Septic Complications During Percutaneous Nephrolitholotomy (PCNL), Visceral Complications of Percutaneous Nephrolithotomy (PCNL), Percutaneous Nephrolithotomy (PCNL) for Staghorn Calculi--,Flexible Renal Nephroscopy: Overcoming the Difficulties,Chinese Minimally Invasive Percutaneous Nephrolithotomy (MPCNL, Percutaneous Renal Surgery for Renal Pelvic Tumors: Overcoming the Difficulties, Percutaneous Nephrolithotomy (PCNL) in the Treatment of Stones within Horseshoe Kidneys and in Patients with Autosomal Dominant Polycystic Kidney Disease,Drainage Systems After Percutanous Renal Procedures,Retrograde Nephrostomy Access: Overcoming the Difficulties,Percutaneous Nephrolithotomy (PCNL)--The Supine Approach,Percutaneous Nephrolithotomy (PCNL) in Obese Patients: Overcoming the Difficulties,Percutanous Nephrolithotomy (PCNL) for Caliceal Diverticulum: An Egyptian ,Experience ,Endourological Management of Urological Complications Following Renal ,Transplantation,Difficult Situations in Percutaneous Nephrolithotomy (PCNL) for Solitary Kidney and , Renal Failure,Percutaneous Nephrolithotomy (PCNL) and Other Simultaneous Procedures,Adult Endopyelotomy: Overcoming the Difficulties, Ureteroscopy for Upper Ureteral Stones: Overcoming the Difficulties of the Rigid, Approach ,Uretheroscopy for Upper Ureteric and Renal Stones: Overcoming Difficulties with , the Flexible Approach,Ureteroscopy for Ureteral Strictures ,Ureteroscopic Management of Ureteral and Renal Pelvic Tumors: Overcoming the Difficulties,Endourologic Management of Non-Malignant Bilharzial Urinary Complications ,Ureteroscopy During Pregnancy Pediatric Percutaneous Nephrolithotomy (PCNL): Overcoming the Difficulties,Pediatric Ureteroscopy: Overcoming the Difficulties, Difficulties with Ureteral Stents, Overcoming the Cost Difficulties in Endourology , Difficulties in Endourologic Training, Avoiding and Overcoming Medico-Legal Difficulties in Endourology.