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Endopyelotomy is an endoscopic procedure to treat ureteropelvic junction (UPJ) obstruction. The kidney is either approached through the Percutaneous Nephrostomy tube (from the side i.e. Antegrade Endopyelotomy) or through the urethra and urinary bladder (Retrograde Endopyelotomy). Endopyelotomy relieves the obstruction in the upper part of the ureter called the renal pelvis.
