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Ureteropelvic Junction Obstruction
Jane S. Kim, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Abbreviations

              • Ureteropelvic junction (UPJ) obstruction, pelviureteric junction obstruction (PUJO)
            • Definitions

              • Obstruction of urine flow at level of UPJ

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • Radiographic Findings

                  • CT Findings

                    • MR Findings

                      • Nuclear Medicine Findings

                        • Imaging Recommendations

                          DIFFERENTIAL DIAGNOSIS

                            PATHOLOGY

                            • General Features

                              • Microscopic Features

                                CLINICAL ISSUES

                                • Presentation

                                  • Demographics

                                    • Natural History & Prognosis

                                      • Treatment

                                        DIAGNOSTIC CHECKLIST

                                        • Consider

                                          • Image Interpretation Pearls

                                            Selected References

                                            1. Arora S et al: Predictors for the need of surgery in antenatally detected hydronephrosis due to UPJ obstruction - A prospective multivariate analysis. J Pediatr Urol. ePub, 2015
                                            2. Lin L et al: Role of endoluminal sonography in evaluation of obstruction of the ureteropelvic junction. AJR Am J Roentgenol. 191(4):1250-4, 2008
                                            3. Calder AD et al: Contrast-enhanced magnetic resonance angiography for the detection of crossing renal vessels in children with symptomatic ureteropelvic junction obstruction: comparison with operative findings. Pediatr Radiol. 37(4):356-61, 2007
                                            4. Williams B et al: Pathophysiology and treatment of ureteropelvic junction obstruction. Curr Urol Rep. 8(2):111-7, 2007
                                            5. Jones RA et al: Dynamic contrast-enhanced MR urography in the evaluation of pediatric hydronephrosis: Part 1, functional assessment. AJR Am J Roentgenol. 185(6):1598-607, 2005
                                            6. McDaniel BB et al: Dynamic contrast-enhanced MR urography in the evaluation of pediatric hydronephrosis: part 2, anatomic and functional assessment of uteropelvic junction obstruction. AJR Am J Roentgenol. 185(6):1608-14, 2005
                                            7. Khaira HS et al: Helical computed tomography for identification of crossing vessels in ureteropelvic junction obstruction-comparison with operative findings. Urology. 62(1):35-9, 2003
                                            8. Rooks VJ et al: Extrinsic ureteropelvic junction obstruction from a crossing renal vessel: demography and imaging. Pediatr Radiol. 31(2):120-4, 2001
                                            9. Keeley FX Jr et al: A prospective study of endoluminal ultrasound versus computerized tomography angiography for detecting crossing vessels at the ureteropelvic junction. J Urol. 162(6):1938-41, 1999
                                            Related Anatomy
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                                            Related Differential Diagnoses
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                                            References
                                            Tables

                                            Tables

                                            KEY FACTS

                                            • Terminology

                                              • Imaging

                                                • Top Differential Diagnoses

                                                  • Pathology

                                                    • Clinical Issues

                                                      TERMINOLOGY

                                                      • Abbreviations

                                                        • Ureteropelvic junction (UPJ) obstruction, pelviureteric junction obstruction (PUJO)
                                                      • Definitions

                                                        • Obstruction of urine flow at level of UPJ

                                                      IMAGING

                                                      • General Features

                                                        • Ultrasonographic Findings

                                                          • Radiographic Findings

                                                            • CT Findings

                                                              • MR Findings

                                                                • Nuclear Medicine Findings

                                                                  • Imaging Recommendations

                                                                    DIFFERENTIAL DIAGNOSIS

                                                                      PATHOLOGY

                                                                      • General Features

                                                                        • Microscopic Features

                                                                          CLINICAL ISSUES

                                                                          • Presentation

                                                                            • Demographics

                                                                              • Natural History & Prognosis

                                                                                • Treatment

                                                                                  DIAGNOSTIC CHECKLIST

                                                                                  • Consider

                                                                                    • Image Interpretation Pearls

                                                                                      Selected References

                                                                                      1. Arora S et al: Predictors for the need of surgery in antenatally detected hydronephrosis due to UPJ obstruction - A prospective multivariate analysis. J Pediatr Urol. ePub, 2015
                                                                                      2. Lin L et al: Role of endoluminal sonography in evaluation of obstruction of the ureteropelvic junction. AJR Am J Roentgenol. 191(4):1250-4, 2008
                                                                                      3. Calder AD et al: Contrast-enhanced magnetic resonance angiography for the detection of crossing renal vessels in children with symptomatic ureteropelvic junction obstruction: comparison with operative findings. Pediatr Radiol. 37(4):356-61, 2007
                                                                                      4. Williams B et al: Pathophysiology and treatment of ureteropelvic junction obstruction. Curr Urol Rep. 8(2):111-7, 2007
                                                                                      5. Jones RA et al: Dynamic contrast-enhanced MR urography in the evaluation of pediatric hydronephrosis: Part 1, functional assessment. AJR Am J Roentgenol. 185(6):1598-607, 2005
                                                                                      6. McDaniel BB et al: Dynamic contrast-enhanced MR urography in the evaluation of pediatric hydronephrosis: part 2, anatomic and functional assessment of uteropelvic junction obstruction. AJR Am J Roentgenol. 185(6):1608-14, 2005
                                                                                      7. Khaira HS et al: Helical computed tomography for identification of crossing vessels in ureteropelvic junction obstruction-comparison with operative findings. Urology. 62(1):35-9, 2003
                                                                                      8. Rooks VJ et al: Extrinsic ureteropelvic junction obstruction from a crossing renal vessel: demography and imaging. Pediatr Radiol. 31(2):120-4, 2001
                                                                                      9. Keeley FX Jr et al: A prospective study of endoluminal ultrasound versus computerized tomography angiography for detecting crossing vessels at the ureteropelvic junction. J Urol. 162(6):1938-41, 1999