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Vermian Dysgenesis
Karen Y. Oh, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Synonyms

              • Dandy-Walker variant: This terminology best avoided as it is imprecise
                • Accurate patient counseling very difficult given varied reported outcomes
            • Definitions

              • Partial or complete agenesis of cerebellar vermis

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        CLINICAL ISSUES

                        • Natural History & Prognosis

                          • Treatment

                            DIAGNOSTIC CHECKLIST

                            • Image Interpretation Pearls

                              Selected References

                              1. Robinson AJ: Inferior vermian hypoplasia--preconception, misconception. Ultrasound Obstet Gynecol. 43(2):123-36, 2014
                              2. Patek KJ et al: Posterior fossa anomalies diagnosed with fetal MRI: associated anomalies and neurodevelopmental outcomes. Prenat Diagn. 32(1):75-82, 2012
                              3. Malinger G et al: The fetal cerebellum. Pitfalls in diagnosis and management. Prenat Diagn. 29(4):372-80, 2009
                              4. Robinson AJ et al: The fetal cerebellar vermis: assessment for abnormal development by ultrasonography and magnetic resonance imaging. Ultrasound Q. 23(3):211-23, 2007
                              5. Paladini D et al: Posterior fossa and vermian morphometry in the characterization of fetal cerebellar abnormalities: a prospective three-dimensional ultrasound study. Ultrasound Obstet Gynecol. 27(5):482-9, 2006
                              6. Zalel Y et al: The development of the fetal vermis: an in-utero sonographic evaluation. Ultrasound Obstet Gynecol. 19(2):136-9, 2002
                              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

                                        • Synonyms

                                          • Dandy-Walker variant: This terminology best avoided as it is imprecise
                                            • Accurate patient counseling very difficult given varied reported outcomes
                                        • Definitions

                                          • Partial or complete agenesis of cerebellar vermis

                                        IMAGING

                                        • General Features

                                          • Ultrasonographic Findings

                                            • MR Findings

                                              • Imaging Recommendations

                                                DIFFERENTIAL DIAGNOSIS

                                                  PATHOLOGY

                                                  • General Features

                                                    CLINICAL ISSUES

                                                    • Natural History & Prognosis

                                                      • Treatment

                                                        DIAGNOSTIC CHECKLIST

                                                        • Image Interpretation Pearls

                                                          Selected References

                                                          1. Robinson AJ: Inferior vermian hypoplasia--preconception, misconception. Ultrasound Obstet Gynecol. 43(2):123-36, 2014
                                                          2. Patek KJ et al: Posterior fossa anomalies diagnosed with fetal MRI: associated anomalies and neurodevelopmental outcomes. Prenat Diagn. 32(1):75-82, 2012
                                                          3. Malinger G et al: The fetal cerebellum. Pitfalls in diagnosis and management. Prenat Diagn. 29(4):372-80, 2009
                                                          4. Robinson AJ et al: The fetal cerebellar vermis: assessment for abnormal development by ultrasonography and magnetic resonance imaging. Ultrasound Q. 23(3):211-23, 2007
                                                          5. Paladini D et al: Posterior fossa and vermian morphometry in the characterization of fetal cerebellar abnormalities: a prospective three-dimensional ultrasound study. Ultrasound Obstet Gynecol. 27(5):482-9, 2006
                                                          6. Zalel Y et al: The development of the fetal vermis: an in-utero sonographic evaluation. Ultrasound Obstet Gynecol. 19(2):136-9, 2002