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Congenital Megacalyces and Megaureter
Alessandro Furlan, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Synonyms

              • Megacalyces = megacalycosis
            • Definitions

              • Megacalyces: Dilatation of calyces with normal-sized renal pelvis and ureter
              • Megaureter: Enlarged ureter (diameter > 7 mm)
                • Primary obstructed megaureter: Dilatation due to functional obstruction at ureterovesical junction (absent peristalsis)

            IMAGING

            • Radiographic Findings

              • Ultrasonographic Findings

                • CT Findings

                  • Nuclear Medicine Findings

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Staging, Grading, & Classification

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  Selected References

                                  1. Suzuki Y et al: Congenital megaureter. Rev Obstet Gynecol. 1(4):152-3, 2008
                                  2. Berrocal T et al: Anomalies of the distal ureter, bladder, and urethra in children: embryologic, radiologic, and pathologic features. Radiographics. 22(5):1139-64, 2002
                                  3. Shokeir AA et al: Primary megaureter: current trends in diagnosis and treatment. BJU Int. 86(7):861-8, 2000
                                  4. Rickwood AM et al: Natural history of obstructed and pseudo-obstructed megaureters detected by prenatal ultrasonography. Br J Urol. 70(3):322-5, 1992
                                  5. Vargas B et al: The coexistence of congenital megacalyces and primary megaureter. AJR Am J Roentgenol. 147(2):313-6, 1986
                                  6. Wood BP et al: Ureterovesical obstruction and megaloureter: diagnosis by real-time US. Radiology. 156(1):79-81, 1985
                                  7. Talner LB et al: Megacalyces. Clin Radiol. 23(3):55-61, 1972
                                  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

                                            • Synonyms

                                              • Megacalyces = megacalycosis
                                            • Definitions

                                              • Megacalyces: Dilatation of calyces with normal-sized renal pelvis and ureter
                                              • Megaureter: Enlarged ureter (diameter > 7 mm)
                                                • Primary obstructed megaureter: Dilatation due to functional obstruction at ureterovesical junction (absent peristalsis)

                                            IMAGING

                                            • Radiographic Findings

                                              • Ultrasonographic Findings

                                                • CT Findings

                                                  • Nuclear Medicine Findings

                                                    DIFFERENTIAL DIAGNOSIS

                                                      PATHOLOGY

                                                      • General Features

                                                        • Staging, Grading, & Classification

                                                          CLINICAL ISSUES

                                                          • Presentation

                                                            • Demographics

                                                              • Natural History & Prognosis

                                                                • Treatment

                                                                  Selected References

                                                                  1. Suzuki Y et al: Congenital megaureter. Rev Obstet Gynecol. 1(4):152-3, 2008
                                                                  2. Berrocal T et al: Anomalies of the distal ureter, bladder, and urethra in children: embryologic, radiologic, and pathologic features. Radiographics. 22(5):1139-64, 2002
                                                                  3. Shokeir AA et al: Primary megaureter: current trends in diagnosis and treatment. BJU Int. 86(7):861-8, 2000
                                                                  4. Rickwood AM et al: Natural history of obstructed and pseudo-obstructed megaureters detected by prenatal ultrasonography. Br J Urol. 70(3):322-5, 1992
                                                                  5. Vargas B et al: The coexistence of congenital megacalyces and primary megaureter. AJR Am J Roentgenol. 147(2):313-6, 1986
                                                                  6. Wood BP et al: Ureterovesical obstruction and megaloureter: diagnosis by real-time US. Radiology. 156(1):79-81, 1985
                                                                  7. Talner LB et al: Megacalyces. Clin Radiol. 23(3):55-61, 1972