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Arachnoid Cyst
Anne Kennedy, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Arachnoid cyst (AC)
            • Definitions

              • CSF collection enclosed within layers of arachnoid

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Staging, Grading, & Classification

                          • Microscopic Features

                            CLINICAL ISSUES

                            • Presentation

                              • Demographics

                                • Natural History & Prognosis

                                  • Treatment

                                    DIAGNOSTIC CHECKLIST

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Beresford C et al: Prenatal diagnosis of arachnoid cysts: a case series and systematic review. Childs Nerv Syst. 36(4):729-41, 2020
                                      2. Yahal O et al: Prenatal diagnosis of arachnoid cysts: MRI features and neurodevelopmental outcome. Eur J Radiol. 113:232-7, 2019
                                      3. Dall'Asta A et al: Etiology and prognosis of severe ventriculomegaly diagnosed at late gestation. Ultraschall Med. 39(6):675-89, 2018
                                      4. Youssef A et al: Outcome of fetuses with supratentorial extra-axial intracranial cysts: a systematic review. Fetal Diagn Ther. 40(1):1-12, 2016
                                      5. De Keersmaecker B et al: Outcome of 12 antenatally diagnosed fetal arachnoid cysts: case series and review of the literature. Eur J Paediatr Neurol. 19(2):114-21, 2015
                                      6. Lee JY et al: Enlarging arachnoid cyst: a false alarm for infants. Childs Nerv Syst. 28(8):1203-11, 2012
                                      7. Miric Tesanic D et al: Prenatal diagnosis of ambient cistern cyst. Ultraschall Med. 33(7):E350-1, 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

                                                  • Arachnoid cyst (AC)
                                                • Definitions

                                                  • CSF collection enclosed within layers of arachnoid

                                                IMAGING

                                                • General Features

                                                  • Ultrasonographic Findings

                                                    • MR Findings

                                                      • Imaging Recommendations

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Staging, Grading, & Classification

                                                              • Microscopic Features

                                                                CLINICAL ISSUES

                                                                • Presentation

                                                                  • Demographics

                                                                    • Natural History & Prognosis

                                                                      • Treatment

                                                                        DIAGNOSTIC CHECKLIST

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Beresford C et al: Prenatal diagnosis of arachnoid cysts: a case series and systematic review. Childs Nerv Syst. 36(4):729-41, 2020
                                                                          2. Yahal O et al: Prenatal diagnosis of arachnoid cysts: MRI features and neurodevelopmental outcome. Eur J Radiol. 113:232-7, 2019
                                                                          3. Dall'Asta A et al: Etiology and prognosis of severe ventriculomegaly diagnosed at late gestation. Ultraschall Med. 39(6):675-89, 2018
                                                                          4. Youssef A et al: Outcome of fetuses with supratentorial extra-axial intracranial cysts: a systematic review. Fetal Diagn Ther. 40(1):1-12, 2016
                                                                          5. De Keersmaecker B et al: Outcome of 12 antenatally diagnosed fetal arachnoid cysts: case series and review of the literature. Eur J Paediatr Neurol. 19(2):114-21, 2015
                                                                          6. Lee JY et al: Enlarging arachnoid cyst: a false alarm for infants. Childs Nerv Syst. 28(8):1203-11, 2012
                                                                          7. Miric Tesanic D et al: Prenatal diagnosis of ambient cistern cyst. Ultraschall Med. 33(7):E350-1, 2012