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Epidural Hematoma, Variant
Anne G. Osborn, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      TERMINOLOGY

      • Definitions

        • Typical EDH
          • Arterial laceration
          • 90-95% supratentorial (temporoparietal most common)
          • Lateral temporoparietal location
          • Biconvex, unilateral
        • Atypical EDH
          • Unusual etiology
            • Venous, not arterial 
          • Unusual location
            • Anterior middle cranial fossa EDH
            • Vertex EDH
            • Clival EDH
          • Unusual shape or density
            • Venous EDH may decompress into dural sinus
            • Initially hyperdense but may become mostly hypodense

      IMAGING

      • Venous EDH

        • Anterior Temporal EDH

          • Vertex EDH

            • Clival EDH

              DIFFERENTIAL DIAGNOSIS

                Selected References

                1. Cikla U et al: Vertex epidural hematoma and triplegia. Neurol India. 62(4):437-8, 2014
                2. Xiao B et al: Could a traumatic epidural hematoma on early CT tell us about its future development? A multi-center retrospective study in China. J Neurotrauma. ePub, 2014
                3. Yamada SM et al: Delayed post-traumatic large subgaleal hematoma caused by diastasis of rhomboid skull suture on the transverse sinus. Childs Nerv Syst. ePub, 2014
                4. Skadorwa T et al: Distinct strategies in the treatment of epidural hematoma in children: clinical considerations. Pediatr Neurosurg. 49:166-71, 2013
                5. Balik V et al: Posterior fossa extradural haematomas. Cent Eur Neurosurg. 71(4):167-72, 2010
                6. Gean AD et al: Benign anterior temporal epidural hematoma: indolent lesion with a characteristic CT imaging appearance after blunt head trauma. Radiology. 257(1):212-8, 2010
                Related Anatomy
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                Related Differential Diagnoses
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                References
                Tables

                Tables

                KEY FACTS

                • Terminology

                  • Imaging

                    TERMINOLOGY

                    • Definitions

                      • Typical EDH
                        • Arterial laceration
                        • 90-95% supratentorial (temporoparietal most common)
                        • Lateral temporoparietal location
                        • Biconvex, unilateral
                      • Atypical EDH
                        • Unusual etiology
                          • Venous, not arterial 
                        • Unusual location
                          • Anterior middle cranial fossa EDH
                          • Vertex EDH
                          • Clival EDH
                        • Unusual shape or density
                          • Venous EDH may decompress into dural sinus
                          • Initially hyperdense but may become mostly hypodense

                    IMAGING

                    • Venous EDH

                      • Anterior Temporal EDH

                        • Vertex EDH

                          • Clival EDH

                            DIFFERENTIAL DIAGNOSIS

                              Selected References

                              1. Cikla U et al: Vertex epidural hematoma and triplegia. Neurol India. 62(4):437-8, 2014
                              2. Xiao B et al: Could a traumatic epidural hematoma on early CT tell us about its future development? A multi-center retrospective study in China. J Neurotrauma. ePub, 2014
                              3. Yamada SM et al: Delayed post-traumatic large subgaleal hematoma caused by diastasis of rhomboid skull suture on the transverse sinus. Childs Nerv Syst. ePub, 2014
                              4. Skadorwa T et al: Distinct strategies in the treatment of epidural hematoma in children: clinical considerations. Pediatr Neurosurg. 49:166-71, 2013
                              5. Balik V et al: Posterior fossa extradural haematomas. Cent Eur Neurosurg. 71(4):167-72, 2010
                              6. Gean AD et al: Benign anterior temporal epidural hematoma: indolent lesion with a characteristic CT imaging appearance after blunt head trauma. Radiology. 257(1):212-8, 2010