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IAC Venous Malformation
H. Ric Harnsberger, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Internal auditory canal venous malformation (IAC-VM)
            • Synonyms

              • "Hemangioma" and "cavernous hemangioma" are misnomers; cavernous malformation
            • Definitions

              • IAC-VM: Benign developmental lesion associated with CNVII in IAC; may extend to geniculate ganglion

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Microscopic Features

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    Selected References

                                    1. Oldenburg MS et al: Cavernous hemangiomas of the internal auditory canal and cerebellopontine angle. Otol Neurotol. 36(1):e30-4, 2015
                                    2. Benoit MM et al: Facial nerve hemangiomas: vascular tumors or malformations? Otolaryngol Head Neck Surg. 142(1):108-14, 2010
                                    3. Capelle HH et al: Cavernous angioma of the geniculate ganglion. J Neurosurg. 109(5):893-6, 2008
                                    4. Greene AK et al: Intraosseous "hemangiomas" are malformations and not tumors. Plast Reconstr Surg. 119(6):1949-50; author reply 1950, 2007
                                    5. Lenarz M et al: Cavernous hemangioma of the internal auditory canal. Eur Arch Otorhinolaryngol. 264(5):569-71, 2007
                                    6. Di Rocco F et al: Cavernous malformation of the internal auditory canal. Acta Neurochir (Wien). 148(6):695-7, 2006
                                    7. Samii M et al: Cavernous angiomas within the internal auditory canal. J Neurosurg. 105(4):581-7, 2006
                                    8. Aquilina K et al: Cavernous angioma of the internal auditory canal. J Laryngol Otol. 118(5):368-71, 2004
                                    9. Bernardeschi D et al: Vascular malformation (so-called hemangioma) of Scarpa's ganglion. Acta Otolaryngol. 124(9):1099-102, 2004
                                    10. Alobid I et al: Cavernous haemangioma of the internal auditory canal. Acta Otolaryngol. 122(5):501-3, 2002
                                    11. Shaida AM et al: Cavernous haemangioma of the internal auditory canal. J Laryngol Otol. 114(6):453-5, 2000
                                    12. Omojola MF et al: CT and MRI features of cavernous haemangioma of internal auditory canal. Br J Radiol. 70(839):1184-7, 1997
                                    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

                                                • Internal auditory canal venous malformation (IAC-VM)
                                              • Synonyms

                                                • "Hemangioma" and "cavernous hemangioma" are misnomers; cavernous malformation
                                              • Definitions

                                                • IAC-VM: Benign developmental lesion associated with CNVII in IAC; may extend to geniculate ganglion

                                              IMAGING

                                              • General Features

                                                • CT Findings

                                                  • MR Findings

                                                    • Imaging Recommendations

                                                      DIFFERENTIAL DIAGNOSIS

                                                        PATHOLOGY

                                                        • General Features

                                                          • Microscopic Features

                                                            CLINICAL ISSUES

                                                            • Presentation

                                                              • Demographics

                                                                • Natural History & Prognosis

                                                                  • Treatment

                                                                    DIAGNOSTIC CHECKLIST

                                                                    • Consider

                                                                      Selected References

                                                                      1. Oldenburg MS et al: Cavernous hemangiomas of the internal auditory canal and cerebellopontine angle. Otol Neurotol. 36(1):e30-4, 2015
                                                                      2. Benoit MM et al: Facial nerve hemangiomas: vascular tumors or malformations? Otolaryngol Head Neck Surg. 142(1):108-14, 2010
                                                                      3. Capelle HH et al: Cavernous angioma of the geniculate ganglion. J Neurosurg. 109(5):893-6, 2008
                                                                      4. Greene AK et al: Intraosseous "hemangiomas" are malformations and not tumors. Plast Reconstr Surg. 119(6):1949-50; author reply 1950, 2007
                                                                      5. Lenarz M et al: Cavernous hemangioma of the internal auditory canal. Eur Arch Otorhinolaryngol. 264(5):569-71, 2007
                                                                      6. Di Rocco F et al: Cavernous malformation of the internal auditory canal. Acta Neurochir (Wien). 148(6):695-7, 2006
                                                                      7. Samii M et al: Cavernous angiomas within the internal auditory canal. J Neurosurg. 105(4):581-7, 2006
                                                                      8. Aquilina K et al: Cavernous angioma of the internal auditory canal. J Laryngol Otol. 118(5):368-71, 2004
                                                                      9. Bernardeschi D et al: Vascular malformation (so-called hemangioma) of Scarpa's ganglion. Acta Otolaryngol. 124(9):1099-102, 2004
                                                                      10. Alobid I et al: Cavernous haemangioma of the internal auditory canal. Acta Otolaryngol. 122(5):501-3, 2002
                                                                      11. Shaida AM et al: Cavernous haemangioma of the internal auditory canal. J Laryngol Otol. 114(6):453-5, 2000
                                                                      12. Omojola MF et al: CT and MRI features of cavernous haemangioma of internal auditory canal. Br J Radiol. 70(839):1184-7, 1997