Related Experiment Video
Updated: Aug 16, 2026

Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis
Published on: July 8, 2025
Antegrade endopyelotomy in pelvic kidney
Monish Aron1, Rajiv Goel, S C Dash
1Department of Urology, All India Institute of Medical Sciences, New Delhi 110029, India. monisharon@hotmail.com
Antegrade endopyelotomy successfully treated ureteropelvic junction obstruction in a patient with a pelvic kidney. This minimally invasive approach utilized a prior nephrostomy tract, avoiding further surgery.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Nephrology
Background:
- Pelvic kidney presents unique anatomical challenges for urological procedures.
- Ureteropelvic junction (UPJ) obstruction can impair renal function.
- Previous open pyelolithotomy necessitated careful surgical planning.
Observation:
- Antegrade endopyelotomy was performed in a patient with a pelvic kidney.
- A pre-existing nephrostomy tract was utilized for percutaneous access.
- The ureteropelvic junction was visualized, balloon dilated, and incised.
Findings:
- The procedure successfully addressed UPJ obstruction.
- Post-operative renal dynamic scan at 3 months confirmed resolution of obstruction.
- The nephrostomy tract facilitated minimally invasive access.
Implications:
- Antegrade endopyelotomy is a viable treatment for UPJ obstruction in complex cases like pelvic kidneys.
- Utilizing existing tracts can enhance minimally invasive surgical outcomes.
- This technique offers a less invasive alternative to open surgery for UPJ obstruction.
Related Concept Videos
Kidney Transplant II: Surgical Procedure
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Urinary Tract Calculi VI: Surgical Management
Kidney Transplant I: Introduction
Acute Pyelonephritis I: Introduction
