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Aneurysmal Subarachnoid Hemorrhage
Anne G. Osborn, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Aneurysmal subarachnoid hemorrhage (aSAH)
            • Definitions

              • Extravasation of blood into subarachnoid space
                • Usually from ruptured saccular aneurysm
                • Less common: Intracranial dissection, dissecting aneurysm

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Angiographic Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Staging, Grading, & Classification

                            • Gross Pathologic & Surgical Features

                              CLINICAL ISSUES

                              • Presentation

                                • Demographics

                                  • Natural History & Prognosis

                                    • Treatment

                                      DIAGNOSTIC CHECKLIST

                                      • Consider

                                        • Image Interpretation Pearls

                                          Selected References

                                          1. Ramgren B et al: CT angiography in non-traumatic subarachnoid hemorrhage: the importance of arterial attenuation for the detection of intracranial aneurysms. Acta Radiol. ePub, 2014
                                          2. Farzad A et al: Emergency diagnosis of subarachnoid hemorrhage: an evidence-based debate. J Emerg Med. 44(5):1045-53, 2013
                                          3. Froehler MT: Endovascular treatment of ruptured intracranial aneurysms. Curr Neurol Neurosci Rep. 13(2):326, 2013
                                          4. Rana AK et al: Likelihood of aneurysmal subarachnoid haemorrhage in patients with normal unenhanced CT, CSF xanthochromia on spectrophotometry and negative CT angiography. J R Coll Physicians Edinb. 43(3):200-6, 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

                                                      • Aneurysmal subarachnoid hemorrhage (aSAH)
                                                    • Definitions

                                                      • Extravasation of blood into subarachnoid space
                                                        • Usually from ruptured saccular aneurysm
                                                        • Less common: Intracranial dissection, dissecting aneurysm

                                                    IMAGING

                                                    • General Features

                                                      • CT Findings

                                                        • MR Findings

                                                          • Angiographic Findings

                                                            • Imaging Recommendations

                                                              DIFFERENTIAL DIAGNOSIS

                                                                PATHOLOGY

                                                                • General Features

                                                                  • Staging, Grading, & Classification

                                                                    • Gross Pathologic & Surgical Features

                                                                      CLINICAL ISSUES

                                                                      • Presentation

                                                                        • Demographics

                                                                          • Natural History & Prognosis

                                                                            • Treatment

                                                                              DIAGNOSTIC CHECKLIST

                                                                              • Consider

                                                                                • Image Interpretation Pearls

                                                                                  Selected References

                                                                                  1. Ramgren B et al: CT angiography in non-traumatic subarachnoid hemorrhage: the importance of arterial attenuation for the detection of intracranial aneurysms. Acta Radiol. ePub, 2014
                                                                                  2. Farzad A et al: Emergency diagnosis of subarachnoid hemorrhage: an evidence-based debate. J Emerg Med. 44(5):1045-53, 2013
                                                                                  3. Froehler MT: Endovascular treatment of ruptured intracranial aneurysms. Curr Neurol Neurosci Rep. 13(2):326, 2013
                                                                                  4. Rana AK et al: Likelihood of aneurysmal subarachnoid haemorrhage in patients with normal unenhanced CT, CSF xanthochromia on spectrophotometry and negative CT angiography. J R Coll Physicians Edinb. 43(3):200-6, 2013