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Mega Cisterna Magna
Anne Kennedy, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Mega cisterna magna (MCM)
            • Definitions

              • Cisterna magna measuring > 10 mm

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        CLINICAL ISSUES

                        • Presentation

                          • Demographics

                            • Natural History & Prognosis

                              DIAGNOSTIC CHECKLIST

                              • Image Interpretation Pearls

                                Selected References

                                1. Whitehead MT et al: The fetal falx cerebelli. Pediatr Radiol. 50(7):984-9, 2020
                                2. Pertl B et al: The fetal posterior fossa on prenatal ultrasound imaging: normal longitudinal development and posterior fossa anomalies. Ultraschall Med. 40(6):692-721, 2019
                                3. Sun L et al: Quantitative diagnostic advantages of three-dimensional ultrasound volume imaging for fetal posterior fossa anomalies: preliminary establishment of a prediction model. Prenat Diagn. 39(12):1086-95, 2019
                                4. Weaver NL et al: Differential diagnoses and their implications of Dandy-Walker malformation or isolated cisterna magna, a case study: baby V. Neonatal Netw. 37(6):358-64, 2018
                                5. D'Antonio F et al: Systematic review and meta-analysis of isolated posterior fossa malformations on prenatal imaging (part 2): neurodevelopmental outcome. Ultrasound Obstet Gynecol. 48(1):28-37, 2016
                                6. D'Antonio F et al: Systematic review and meta-analysis of isolated posterior fossa malformations on prenatal ultrasound: nomenclature, diagnostic accuracy and associated anomalies. Ultrasound Obstet Gynecol. 47(6):690-7, 2016
                                7. Ghali R et al: Perinatal and short-term neonatal outcomes of posterior fossa anomalies. Fetal Diagn Ther. 35(2):108-17, 2014
                                8. Gandolfi Colleoni G et al: Prenatal diagnosis and outcome of fetal posterior fossa fluid collections. Ultrasound Obstet Gynecol. 39(6):625-31, 2012
                                9. Patek KJ et al: Posterior fossa anomalies diagnosed with fetal MRI: associated anomalies and neurodevelopmental outcomes. Prenat Diagn. 32(1):75-82, 2012
                                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

                                          • Abbreviations

                                            • Mega cisterna magna (MCM)
                                          • Definitions

                                            • Cisterna magna measuring > 10 mm

                                          IMAGING

                                          • General Features

                                            • Ultrasonographic Findings

                                              • MR Findings

                                                • Imaging Recommendations

                                                  DIFFERENTIAL DIAGNOSIS

                                                    PATHOLOGY

                                                    • General Features

                                                      CLINICAL ISSUES

                                                      • Presentation

                                                        • Demographics

                                                          • Natural History & Prognosis

                                                            DIAGNOSTIC CHECKLIST

                                                            • Image Interpretation Pearls

                                                              Selected References

                                                              1. Whitehead MT et al: The fetal falx cerebelli. Pediatr Radiol. 50(7):984-9, 2020
                                                              2. Pertl B et al: The fetal posterior fossa on prenatal ultrasound imaging: normal longitudinal development and posterior fossa anomalies. Ultraschall Med. 40(6):692-721, 2019
                                                              3. Sun L et al: Quantitative diagnostic advantages of three-dimensional ultrasound volume imaging for fetal posterior fossa anomalies: preliminary establishment of a prediction model. Prenat Diagn. 39(12):1086-95, 2019
                                                              4. Weaver NL et al: Differential diagnoses and their implications of Dandy-Walker malformation or isolated cisterna magna, a case study: baby V. Neonatal Netw. 37(6):358-64, 2018
                                                              5. D'Antonio F et al: Systematic review and meta-analysis of isolated posterior fossa malformations on prenatal imaging (part 2): neurodevelopmental outcome. Ultrasound Obstet Gynecol. 48(1):28-37, 2016
                                                              6. D'Antonio F et al: Systematic review and meta-analysis of isolated posterior fossa malformations on prenatal ultrasound: nomenclature, diagnostic accuracy and associated anomalies. Ultrasound Obstet Gynecol. 47(6):690-7, 2016
                                                              7. Ghali R et al: Perinatal and short-term neonatal outcomes of posterior fossa anomalies. Fetal Diagn Ther. 35(2):108-17, 2014
                                                              8. Gandolfi Colleoni G et al: Prenatal diagnosis and outcome of fetal posterior fossa fluid collections. Ultrasound Obstet Gynecol. 39(6):625-31, 2012
                                                              9. Patek KJ et al: Posterior fossa anomalies diagnosed with fetal MRI: associated anomalies and neurodevelopmental outcomes. Prenat Diagn. 32(1):75-82, 2012