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CPA-IAC Aneurysm
H. Ric Harnsberger, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          TERMINOLOGY

          • Definitions

            • Focal ballooning or fusiform dilatation of posterior inferior cerebellar artery (PICA), vertebral artery (VA), or anterior inferior cerebellar artery (AICA) in CPA-IAC cistern

          IMAGING

          • General Features

            • CT Findings

              • MR Findings

                • Angiographic Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Gross Pathologic & Surgical Features

                          • Microscopic Features

                            CLINICAL ISSUES

                            • Presentation

                              • Demographics

                                • Natural History & Prognosis

                                  • Treatment

                                    DIAGNOSTIC CHECKLIST

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Cianfoni A et al: Clinical presentation of cerebral aneurysms. Eur J Radiol. Epub ahead of print, 2012
                                      2. Bambakidis NC et al: Management of anterior inferior cerebellar artery aneurysms: an illustrative case and review of literature. Neurosurg Focus. 26(5):E6, 2009
                                      3. Chihara Y et al: Fusiform aneurysm of the basilar artery presenting as a cerebellopontine angle mass. Eur Arch Otorhinolaryngol. 266(1):151-2, 2009
                                      4. Sun Y et al: Ruptured intrameatal AICA aneurysms--a report of two cases and review of the literature. Acta Neurochir (Wien). 151(11):1525-30, 2009
                                      5. Bonneville F et al: Imaging of cerebellopontine angle lesions: an update. Part 1: enhancing extra-axial lesions. Eur Radiol. 17(10):2472-82, 2007
                                      6. Bonneville F et al: Unusual lesions of the cerebellopontine angle: a segmental approach. Radiographics. 21(2):419-38, 2001
                                      7. Mizushima H et al: Aneurysm of the distal anterior inferior cerebellar artery at the medial branch: a case report and review of the literature. Surg Neurol. 52(2):137-42, 1999
                                      8. Kinney WC et al: Rare lesions of the posterior fossa with initial retrocochlear auditory and vestibular complaints. Am J Otol. 18(3):373-80, 1997
                                      9. Morris DP et al: Thrombosed posterior-inferior cerebellar artery aneurysm: a rare cerebellopontine angle tumour. J Laryngol Otol. 109(5):429-30, 1995
                                      10. Fukuya T et al: Aneurysms of the peripheral portion of the anterior inferior cerebellar artery; report of two cases. Neuroradiology. 29(5):493-6, 1987
                                      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

                                              TERMINOLOGY

                                              • Definitions

                                                • Focal ballooning or fusiform dilatation of posterior inferior cerebellar artery (PICA), vertebral artery (VA), or anterior inferior cerebellar artery (AICA) in CPA-IAC cistern

                                              IMAGING

                                              • General Features

                                                • CT Findings

                                                  • MR Findings

                                                    • Angiographic Findings

                                                      • Imaging Recommendations

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Gross Pathologic & Surgical Features

                                                              • Microscopic Features

                                                                CLINICAL ISSUES

                                                                • Presentation

                                                                  • Demographics

                                                                    • Natural History & Prognosis

                                                                      • Treatment

                                                                        DIAGNOSTIC CHECKLIST

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Cianfoni A et al: Clinical presentation of cerebral aneurysms. Eur J Radiol. Epub ahead of print, 2012
                                                                          2. Bambakidis NC et al: Management of anterior inferior cerebellar artery aneurysms: an illustrative case and review of literature. Neurosurg Focus. 26(5):E6, 2009
                                                                          3. Chihara Y et al: Fusiform aneurysm of the basilar artery presenting as a cerebellopontine angle mass. Eur Arch Otorhinolaryngol. 266(1):151-2, 2009
                                                                          4. Sun Y et al: Ruptured intrameatal AICA aneurysms--a report of two cases and review of the literature. Acta Neurochir (Wien). 151(11):1525-30, 2009
                                                                          5. Bonneville F et al: Imaging of cerebellopontine angle lesions: an update. Part 1: enhancing extra-axial lesions. Eur Radiol. 17(10):2472-82, 2007
                                                                          6. Bonneville F et al: Unusual lesions of the cerebellopontine angle: a segmental approach. Radiographics. 21(2):419-38, 2001
                                                                          7. Mizushima H et al: Aneurysm of the distal anterior inferior cerebellar artery at the medial branch: a case report and review of the literature. Surg Neurol. 52(2):137-42, 1999
                                                                          8. Kinney WC et al: Rare lesions of the posterior fossa with initial retrocochlear auditory and vestibular complaints. Am J Otol. 18(3):373-80, 1997
                                                                          9. Morris DP et al: Thrombosed posterior-inferior cerebellar artery aneurysm: a rare cerebellopontine angle tumour. J Laryngol Otol. 109(5):429-30, 1995
                                                                          10. Fukuya T et al: Aneurysms of the peripheral portion of the anterior inferior cerebellar artery; report of two cases. Neuroradiology. 29(5):493-6, 1987