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Duplicated Collecting System
Priyanka Jha, MBBS; Paula J. Woodward, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Definitions

              • Duplicated renal collecting system draining separate upper and lower pole renal moieties

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • Imaging Recommendations

                  DIFFERENTIAL DIAGNOSIS

                    PATHOLOGY

                    • General Features

                      • Staging, Grading, & Classification

                        CLINICAL ISSUES

                        • Presentation

                          • Demographics

                            • Natural History & Prognosis

                              • Treatment

                                DIAGNOSTIC CHECKLIST

                                • Consider

                                  • Image Interpretation Pearls

                                    Selected References

                                    1. Bascietto F et al: Prenatal imaging features and postnatal outcomes of isolated fetal duplex renal collecting system: a systematic review and meta-analysis. Prenat Diagn. 40(4):424-31, 2020
                                    2. Ji H et al: Prenatal diagnosis of renal duplication by magnetic resonance imaging. J Matern Fetal Neonatal Med. 33(14):2342-7, 2020
                                    3. Calle-Toro JS et al: Morphologic and functional evaluation of duplicated renal collecting systems with MR urography: a descriptive analysis. Clin Imaging. 57:69-76, 2019
                                    4. Lang-Motta G et al: Videolaparoscopic lower pole heminephrectomy for treatment of a duplex kidney. J Pediatr Urol. 15(2):193-4, 2019
                                    5. Singer A et al: Is fetal isolated double renal collecting system an indication for chromosomal microarray? J Matern Fetal Neonatal Med. 1-5, 2019
                                    6. Didier RA et al: The duplicated collecting system of the urinary tract: embryology, imaging appearances and clinical considerations. Pediatr Radiol. 47(11):1526-38, 2017
                                    7. Sirisreetreerux P et al: Duplicated renal collecting system with ectopic ureter in female bladder exstrophy: a case report. Urology. 89:129-31, 2016
                                    8. Rubenwolf P et al: Presentation, management and long-term outcome of ureteropelvic junction obstruction in duplex kidneys. J Urol. 194(2):427-32, 2015
                                    9. Dias T et al: Ultrasound diagnosis of fetal renal abnormalities. Best Pract Res Clin Obstet Gynaecol. 28(3):403-15, 2014
                                    10. Lee NG et al: Evaluation of prenatal hydronephrosis: novel criteria for predicting vesicoureteral reflux on ultrasonography. J Urol. 192(3):914-8, 2014
                                    11. Nguyen HT et al: Multidisciplinary consensus on the classification of prenatal and postnatal urinary tract dilation (UTD classification system). J Pediatr Urol. 10(6):982-98, 2014
                                    12. Godinho AB et al: Ureterocele: antenatal diagnosis and management. Fetal Diagn Ther. 34(3):188-91, 2013
                                    13. Castagnetti M et al: Management of duplex system ureteroceles in neonates and infants. Nat Rev Urol. 6(6):307-15, 2009
                                    14. Kitchens DM et al: Antenatal hydronephrosis. Curr Urol Rep. 10(2):126-33, 2009
                                    15. Bhide A et al: The sensitivity of antenatal ultrasound for predicting renal tract surgery in early childhood. Ultrasound Obstet Gynecol. 25(5):489-92, 2005
                                    16. Chertin B et al: Does prenatal diagnosis influence the morbidity associated with left in situ nonfunctioning or poorly functioning renal moiety after endoscopic puncture of ureterocele? J Urol. 173(4):1349-52, 2005
                                    17. Davidovits M et al: Unilateral duplicated system: comparative length and function of the kidneys. Clin Nucl Med. 29(2):99-102, 2004
                                    18. Lim DJ et al: Clinical characteristics and outcome of hydronephrosis detected by prenatal ultrasonography. J Korean Med Sci. 18(6):859-62, 2003
                                    19. Whitten SM et al: Accuracy of antenatal fetal ultrasound in the diagnosis of duplex kidneys. Ultrasound Obstet Gynecol. 21(4):342-6, 2003
                                    20. Kang AH et al: Antenatal ultrasonographic development of ureteroceles. Implications for management. Fetal Diagn Ther. 13(3):157-61, 1998
                                    21. Abuhamad AZ et al: Renal duplication anomalies in the fetus: clues for prenatal diagnosis. Ultrasound Obstet Gynecol. 7(3):174-7, 1996
                                    Related Anatomy
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                                    Related Differential Diagnoses
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                                    References
                                    Tables

                                    Tables

                                    KEY FACTS

                                    • Terminology

                                      • Imaging

                                        • Top Differential Diagnoses

                                          • Clinical Issues

                                            • Diagnostic Checklist

                                              TERMINOLOGY

                                              • Definitions

                                                • Duplicated renal collecting system draining separate upper and lower pole renal moieties

                                              IMAGING

                                              • General Features

                                                • Ultrasonographic Findings

                                                  • Imaging Recommendations

                                                    DIFFERENTIAL DIAGNOSIS

                                                      PATHOLOGY

                                                      • General Features

                                                        • Staging, Grading, & Classification

                                                          CLINICAL ISSUES

                                                          • Presentation

                                                            • Demographics

                                                              • Natural History & Prognosis

                                                                • Treatment

                                                                  DIAGNOSTIC CHECKLIST

                                                                  • Consider

                                                                    • Image Interpretation Pearls

                                                                      Selected References

                                                                      1. Bascietto F et al: Prenatal imaging features and postnatal outcomes of isolated fetal duplex renal collecting system: a systematic review and meta-analysis. Prenat Diagn. 40(4):424-31, 2020
                                                                      2. Ji H et al: Prenatal diagnosis of renal duplication by magnetic resonance imaging. J Matern Fetal Neonatal Med. 33(14):2342-7, 2020
                                                                      3. Calle-Toro JS et al: Morphologic and functional evaluation of duplicated renal collecting systems with MR urography: a descriptive analysis. Clin Imaging. 57:69-76, 2019
                                                                      4. Lang-Motta G et al: Videolaparoscopic lower pole heminephrectomy for treatment of a duplex kidney. J Pediatr Urol. 15(2):193-4, 2019
                                                                      5. Singer A et al: Is fetal isolated double renal collecting system an indication for chromosomal microarray? J Matern Fetal Neonatal Med. 1-5, 2019
                                                                      6. Didier RA et al: The duplicated collecting system of the urinary tract: embryology, imaging appearances and clinical considerations. Pediatr Radiol. 47(11):1526-38, 2017
                                                                      7. Sirisreetreerux P et al: Duplicated renal collecting system with ectopic ureter in female bladder exstrophy: a case report. Urology. 89:129-31, 2016
                                                                      8. Rubenwolf P et al: Presentation, management and long-term outcome of ureteropelvic junction obstruction in duplex kidneys. J Urol. 194(2):427-32, 2015
                                                                      9. Dias T et al: Ultrasound diagnosis of fetal renal abnormalities. Best Pract Res Clin Obstet Gynaecol. 28(3):403-15, 2014
                                                                      10. Lee NG et al: Evaluation of prenatal hydronephrosis: novel criteria for predicting vesicoureteral reflux on ultrasonography. J Urol. 192(3):914-8, 2014
                                                                      11. Nguyen HT et al: Multidisciplinary consensus on the classification of prenatal and postnatal urinary tract dilation (UTD classification system). J Pediatr Urol. 10(6):982-98, 2014
                                                                      12. Godinho AB et al: Ureterocele: antenatal diagnosis and management. Fetal Diagn Ther. 34(3):188-91, 2013
                                                                      13. Castagnetti M et al: Management of duplex system ureteroceles in neonates and infants. Nat Rev Urol. 6(6):307-15, 2009
                                                                      14. Kitchens DM et al: Antenatal hydronephrosis. Curr Urol Rep. 10(2):126-33, 2009
                                                                      15. Bhide A et al: The sensitivity of antenatal ultrasound for predicting renal tract surgery in early childhood. Ultrasound Obstet Gynecol. 25(5):489-92, 2005
                                                                      16. Chertin B et al: Does prenatal diagnosis influence the morbidity associated with left in situ nonfunctioning or poorly functioning renal moiety after endoscopic puncture of ureterocele? J Urol. 173(4):1349-52, 2005
                                                                      17. Davidovits M et al: Unilateral duplicated system: comparative length and function of the kidneys. Clin Nucl Med. 29(2):99-102, 2004
                                                                      18. Lim DJ et al: Clinical characteristics and outcome of hydronephrosis detected by prenatal ultrasonography. J Korean Med Sci. 18(6):859-62, 2003
                                                                      19. Whitten SM et al: Accuracy of antenatal fetal ultrasound in the diagnosis of duplex kidneys. Ultrasound Obstet Gynecol. 21(4):342-6, 2003
                                                                      20. Kang AH et al: Antenatal ultrasonographic development of ureteroceles. Implications for management. Fetal Diagn Ther. 13(3):157-61, 1998
                                                                      21. Abuhamad AZ et al: Renal duplication anomalies in the fetus: clues for prenatal diagnosis. Ultrasound Obstet Gynecol. 7(3):174-7, 1996