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Subacute Subdural Hematoma
Anne G. Osborn, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Subacute subdural hematoma (sSDH)
            • Definitions

              • Subacute (~ 3 days to 3 weeks) collection of partially liquified clot, resorbing blood products surrounded by granulation tissue ("membrane")

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Gross Pathologic & Surgical Features

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Kayahara T et al: Predictors of subacute hematoma expansion requiring surgical evacuation after initial conservative treatment in patients with acute subdural hematoma. Acta Neurochir (Wien). 162(2):357-63, 2020
                                      2. Rajah GB et al: Transradial embolization of the left middle meningeal artery and accessory middle meningeal artery for treatment of subacute-chronic subdural hematoma. J Neurointerv Surg. 12(4):436, 2020
                                      3. Bus S et al: Do older patients with acute or subacute subdural hematoma benefit from surgery? Br J Neurosurg. 33(1):51-7, 2019
                                      4. Asan Z: Growth potential of subdural hematomas under clinical observation: which subdural hematomas tend to grow and why they do. World Neurosurg. 113:e598-e603, 2018
                                      5. Liu JKC: Neurologic deterioration due to brain sag after bilateral craniotomy for subdural hematoma evacuation. World Neurosurg. 114:90-3, 2018
                                      6. Tao ZQ et al: The pathogenesis of subacute subdural hematoma: a report of 3 cases and literature review. World Neurosurg. 114:e22-8, 2018
                                      7. Vega RA et al: Natural history of acute subdural hematoma. Neurosurg Clin N Am. 28(2):247-55, 2017
                                      8. Son S et al: Natural course of initially non-operated cases of acute subdural hematoma : the risk factors of hematoma progression. J Korean Neurosurg Soc. 54(3):211-9, 2013
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Top Differential Diagnoses

                                            • Pathology

                                              • Diagnostic Checklist

                                                TERMINOLOGY

                                                • Abbreviations

                                                  • Subacute subdural hematoma (sSDH)
                                                • Definitions

                                                  • Subacute (~ 3 days to 3 weeks) collection of partially liquified clot, resorbing blood products surrounded by granulation tissue ("membrane")

                                                IMAGING

                                                • General Features

                                                  • CT Findings

                                                    • MR Findings

                                                      • Imaging Recommendations

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Gross Pathologic & Surgical Features

                                                              CLINICAL ISSUES

                                                              • Presentation

                                                                • Demographics

                                                                  • Natural History & Prognosis

                                                                    • Treatment

                                                                      DIAGNOSTIC CHECKLIST

                                                                      • Consider

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Kayahara T et al: Predictors of subacute hematoma expansion requiring surgical evacuation after initial conservative treatment in patients with acute subdural hematoma. Acta Neurochir (Wien). 162(2):357-63, 2020
                                                                          2. Rajah GB et al: Transradial embolization of the left middle meningeal artery and accessory middle meningeal artery for treatment of subacute-chronic subdural hematoma. J Neurointerv Surg. 12(4):436, 2020
                                                                          3. Bus S et al: Do older patients with acute or subacute subdural hematoma benefit from surgery? Br J Neurosurg. 33(1):51-7, 2019
                                                                          4. Asan Z: Growth potential of subdural hematomas under clinical observation: which subdural hematomas tend to grow and why they do. World Neurosurg. 113:e598-e603, 2018
                                                                          5. Liu JKC: Neurologic deterioration due to brain sag after bilateral craniotomy for subdural hematoma evacuation. World Neurosurg. 114:90-3, 2018
                                                                          6. Tao ZQ et al: The pathogenesis of subacute subdural hematoma: a report of 3 cases and literature review. World Neurosurg. 114:e22-8, 2018
                                                                          7. Vega RA et al: Natural history of acute subdural hematoma. Neurosurg Clin N Am. 28(2):247-55, 2017
                                                                          8. Son S et al: Natural course of initially non-operated cases of acute subdural hematoma : the risk factors of hematoma progression. J Korean Neurosurg Soc. 54(3):211-9, 2013