I have done my urography test and report is as under: - Plain x-ray: A hyperdense calculus is seen in the right renal pelvis of size 17*13 mm. IVP ? 50ml of non-ionic contrast was injected intravenously and sequential films were taken. Both kidneys are normal size, shaped and position. Both kidneys show simultaneous and contract excretion. Left renal pervicalyceal system appears normal with no evidence of hydronephrosis. Right renal pervicealyceal system shows grade II hydronephrosis. Both ureters appear normal in course and calibre. No obvious intraluminal filling defect or stenosis is seen. No evidence of hydroureter is seen. The bladder is normal in size, shape and position. No obvious intraluminal filling defect is seen. No significant post-void residue is seen. Patient tolerated procedure well with no post procedure complication. Impression ? Right renal perviureteric junction calculus with grade II hydronephrosis. Please guide us, what we do the next.