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Objective: The objective of this study was to evaluate whether administration of a diuretic agent in MR urography has an effect on renal length and to determine whether the increase in length can be used for the assessment of renal function., Conclusion: Renal length may change after diuretic injection, and these changes correlate with renal function.

Nephrolithiasis management within an ectopic kidney presents a challenge to the urologists. Several treatment modalities are possible in this group of patients. Although percutaneous nephrolithotomy (PNL) is an accepted treatment modality in anatomically normal kidneys, ectopic pelvic kidneys require a different and more complicated approach for PNL. We recently treated a 24-year-old patient with calculus and an encrusted J-J stent fragment in pelvic ectopic kidney with a previous history of open pyelolithotomy. Laparoscopy-assisted tubeless percutaneous nephrolithotomy was performed. The technique and the patient characteristics are reported.