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Subacute Subdural Hematoma
Anne G. Osborn, MD, FACR; Bronwyn E. Hamilton, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          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. Kolias AG et al: Chronic subdural haematoma: modern management and emerging therapies. Nat Rev Neurol. 10(10):570-578, 2014
                                    2. Kompheak H et al: Surgery for bilateral large intracranial traumatic hematomas: evacuation in a single session. J Korean Neurosurg Soc. 55(6):348-52, 2014
                                    3. Godlewski B et al: Retrospective analysis of operative treatment of a series of 100 patients with subdural hematoma. Neurol Med Chir (Tokyo). 53(1):26-33, 2013
                                    4. Nayil K et al: Subdural hematomas: an analysis of 1181 Kashmiri patients. World Neurosurg. 77(1):103-10, 2012
                                    5. Tehli O et al: Subdural hematomas and emergency management in infancy and childhood: a single institution's experience. Pediatr Emerg Care. 27(9):834-6, 2011
                                    6. Kemp AM et al: What neuroimaging should be performed in children in whom inflicted brain injury (iBI) is suspected? A systematic review. Clin Radiol. 64(5):473-83, 2009
                                    7. Souirti Z et al: Spontaneous bilateral subacute subdural hematoma revealing intracranial hypotension. Neurosciences (Riyadh). 14(4):384-5, 2009
                                    8. Duhem R et al: [Main temporal aspects of the MRI signal of subdural hematomas and practical contribution to dating head injury.] Neurochirurgie. 52(2-3 Pt 1):93-104, 2006
                                    9. Kuwahara S et al: Diffusion-weighted imaging of traumatic subdural hematoma in the subacute stage. Neurol Med Chir (Tokyo). 45(9):464-9, 2005
                                    10. Kuwahara S et al: Subdural hyperintense band on diffusion-weighted imaging of chronic subdural hematoma indicates bleeding from the outer membrane. Neurol Med Chir (Tokyo). 45(3):125-31, 2005
                                    11. Mori K et al: Delayed magnetic resonance imaging with GdD-DTPA differentiates subdural hygroma and subdural effusion. Surg Neurol. 53(4):303-10; discussion 310-1, 2000
                                    Related Anatomy
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                                    Related Differential Diagnoses
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                                    References
                                    Tables

                                    Tables

                                    KEY FACTS

                                    • Terminology

                                      • Imaging

                                        • Top Differential Diagnoses

                                          • Pathology

                                            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. Kolias AG et al: Chronic subdural haematoma: modern management and emerging therapies. Nat Rev Neurol. 10(10):570-578, 2014
                                                                      2. Kompheak H et al: Surgery for bilateral large intracranial traumatic hematomas: evacuation in a single session. J Korean Neurosurg Soc. 55(6):348-52, 2014
                                                                      3. Godlewski B et al: Retrospective analysis of operative treatment of a series of 100 patients with subdural hematoma. Neurol Med Chir (Tokyo). 53(1):26-33, 2013
                                                                      4. Nayil K et al: Subdural hematomas: an analysis of 1181 Kashmiri patients. World Neurosurg. 77(1):103-10, 2012
                                                                      5. Tehli O et al: Subdural hematomas and emergency management in infancy and childhood: a single institution's experience. Pediatr Emerg Care. 27(9):834-6, 2011
                                                                      6. Kemp AM et al: What neuroimaging should be performed in children in whom inflicted brain injury (iBI) is suspected? A systematic review. Clin Radiol. 64(5):473-83, 2009
                                                                      7. Souirti Z et al: Spontaneous bilateral subacute subdural hematoma revealing intracranial hypotension. Neurosciences (Riyadh). 14(4):384-5, 2009
                                                                      8. Duhem R et al: [Main temporal aspects of the MRI signal of subdural hematomas and practical contribution to dating head injury.] Neurochirurgie. 52(2-3 Pt 1):93-104, 2006
                                                                      9. Kuwahara S et al: Diffusion-weighted imaging of traumatic subdural hematoma in the subacute stage. Neurol Med Chir (Tokyo). 45(9):464-9, 2005
                                                                      10. Kuwahara S et al: Subdural hyperintense band on diffusion-weighted imaging of chronic subdural hematoma indicates bleeding from the outer membrane. Neurol Med Chir (Tokyo). 45(3):125-31, 2005
                                                                      11. Mori K et al: Delayed magnetic resonance imaging with GdD-DTPA differentiates subdural hygroma and subdural effusion. Surg Neurol. 53(4):303-10; discussion 310-1, 2000