Background: A 56-year-old male with bilateral flank pain was admitted following diagnosis of bilateral kidney stone disease. He had previously undergone four separate pyelolithotomy sessions (two per kidney), the latest being 14 years prior. At presentation the patient had two stones in the right kidney and seven in the left kidney. The right renal pelvis was dilated, indicating obstruction of the ureteropelvic junction.
Investigations: Plain radiography, ultrasonography, intravenous pyelography, retrograde ureteropyelography and spiral tomography.
Diagnosis: Bilateral kidney stones and obstruction of the right ureteropelvic junction.
Management: Bilateral percutaneous nephrolithotomy and simultaneous right endopyelotomy; intraoperative antegrade nephrogram; preoperative and postoperative measurement of hemoglobin, blood urea nitrogen and creatinine; postoperative nephrostograms, plain X-ray, diuretic renogram and intravenous pyelography.
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