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Arachnoid Cyst
Anne G. Osborn, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Arachnoid cyst (AC)
            • Synonyms

              • Meningeal cyst
            • Definitions

              • Intraarachnoid CSF-containing sac that does not communicate with ventricular system

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Ultrasonographic Findings

                    • Angiographic Findings

                      • Nuclear Medicine Findings

                        • Imaging Recommendations

                          DIFFERENTIAL DIAGNOSIS

                            PATHOLOGY

                            • General Features

                              • Staging, Grading, & Classification

                                • Gross Pathologic & Surgical Features

                                  • Microscopic Features

                                    CLINICAL ISSUES

                                    • Presentation

                                      • Demographics

                                        • Natural History & Prognosis

                                          • Treatment

                                            DIAGNOSTIC CHECKLIST

                                            • Image Interpretation Pearls

                                              Selected References

                                              1. Kimura R et al: Progressively enlarged convexity arachnoid cysts in elderly Patients: A report of 2 cases. World Neurosurg. 135:253-8, 2020
                                              2. Li L et al: Arachnoid cysts on magnetic resonance imaging: just an incidental finding? J Laryngol Otol. 1-7, 2020
                                              3. Peterson C et al: Spontaneous resolution of asymptomatic pediatric suprasellar arachnoid cysts: Report of 2 cases and review of the literature. Pediatr Neurosurg. 55(1):62-6, 2020
                                              4. Furtado LMF et al: Intracranial arachnoid cyst rupture after mild TBI in children: have we underestimated this risk? BMJ Case Rep. 12(4), 2019
                                              5. Hall S et al: Natural history of intracranial arachnoid cysts. World Neurosurg. ePub, 2019
                                              6. Adin ME et al: Arachnoid cysts with spontaneous intracystic hemorrhage and associated subdural hematoma: Report of management and follow-up of 2 cases. Radiol Case Rep. 13(2):516-21, 2018
                                              7. Balak N: The Sylvian fissure, cistern and arachnoid membrane. Br J Neurosurg. 28(1):98-106, 2014
                                              8. Adeeb N et al: The intracranial arachnoid mater : a comprehensive review of its history, anatomy, imaging, and pathology. Childs Nerv Syst. 29(1):17-33, 2013
                                              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)
                                                        • Synonyms

                                                          • Meningeal cyst
                                                        • Definitions

                                                          • Intraarachnoid CSF-containing sac that does not communicate with ventricular system

                                                        IMAGING

                                                        • General Features

                                                          • CT Findings

                                                            • MR Findings

                                                              • Ultrasonographic Findings

                                                                • Angiographic Findings

                                                                  • Nuclear Medicine Findings

                                                                    • Imaging Recommendations

                                                                      DIFFERENTIAL DIAGNOSIS

                                                                        PATHOLOGY

                                                                        • General Features

                                                                          • Staging, Grading, & Classification

                                                                            • Gross Pathologic & Surgical Features

                                                                              • Microscopic Features

                                                                                CLINICAL ISSUES

                                                                                • Presentation

                                                                                  • Demographics

                                                                                    • Natural History & Prognosis

                                                                                      • Treatment

                                                                                        DIAGNOSTIC CHECKLIST

                                                                                        • Image Interpretation Pearls

                                                                                          Selected References

                                                                                          1. Kimura R et al: Progressively enlarged convexity arachnoid cysts in elderly Patients: A report of 2 cases. World Neurosurg. 135:253-8, 2020
                                                                                          2. Li L et al: Arachnoid cysts on magnetic resonance imaging: just an incidental finding? J Laryngol Otol. 1-7, 2020
                                                                                          3. Peterson C et al: Spontaneous resolution of asymptomatic pediatric suprasellar arachnoid cysts: Report of 2 cases and review of the literature. Pediatr Neurosurg. 55(1):62-6, 2020
                                                                                          4. Furtado LMF et al: Intracranial arachnoid cyst rupture after mild TBI in children: have we underestimated this risk? BMJ Case Rep. 12(4), 2019
                                                                                          5. Hall S et al: Natural history of intracranial arachnoid cysts. World Neurosurg. ePub, 2019
                                                                                          6. Adin ME et al: Arachnoid cysts with spontaneous intracystic hemorrhage and associated subdural hematoma: Report of management and follow-up of 2 cases. Radiol Case Rep. 13(2):516-21, 2018
                                                                                          7. Balak N: The Sylvian fissure, cistern and arachnoid membrane. Br J Neurosurg. 28(1):98-106, 2014
                                                                                          8. Adeeb N et al: The intracranial arachnoid mater : a comprehensive review of its history, anatomy, imaging, and pathology. Childs Nerv Syst. 29(1):17-33, 2013