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Intratemporal Facial Nerve Enhancement
H. Ric Harnsberger, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Definitions

                • Normal contrast enhancement (CE) on T1 C+ MR along course of intratemporal facial nerve (CNVII) without abnormal bony changes

              IMAGING

              • General Features

                • CT Findings

                  • MR Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Gross Pathologic & Surgical Features

                            • Microscopic Features

                              CLINICAL ISSUES

                              • Presentation

                                • Demographics

                                  • Natural History & Prognosis

                                    • Treatment

                                      DIAGNOSTIC CHECKLIST

                                      • Consider

                                        Selected References

                                        1. Dehkharghani S et al: Redefining normal facial nerve enhancement: healthy subject comparison of typical enhancement patterns--unenhanced and contrast-enhanced spin-echo versus 3D inversion recovery-prepared fast spoiled gradient-echo imaging. AJR Am J Roentgenol. 202(5):1108-13, 2014
                                        2. Hong HS et al: Enhancement pattern of the normal facial nerve at 3.0 T temporal MRI. Br J Radiol. 83(986):118-21, 2010
                                        3. Tabuchi T et al: Vascular permeability to fluorescent substance in human cranial nerves. Ann Otol Rhinol Laryngol. 111(8):736-7, 2002
                                        4. Martin-Duverneuil N et al: Contrast enhancement of the facial nerve on MRI: normal or pathological? Neuroradiology. 39(3):207-12, 1997
                                        5. Gebarski SS et al: Enhancement along the normal facial nerve in the facial canal: MR imaging and anatomic correlation. Radiology. 183(2):391-4, 1992
                                        Related Anatomy
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                                        Related Differential Diagnoses
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                                        References
                                        Tables

                                        Tables

                                        KEY FACTS

                                        • Terminology

                                          • Imaging

                                            • Top Differential Diagnoses

                                              • Pathology

                                                • Clinical Issues

                                                  • Diagnostic Checklist

                                                    TERMINOLOGY

                                                    • Definitions

                                                      • Normal contrast enhancement (CE) on T1 C+ MR along course of intratemporal facial nerve (CNVII) without abnormal bony changes

                                                    IMAGING

                                                    • General Features

                                                      • CT Findings

                                                        • MR Findings

                                                          • Imaging Recommendations

                                                            DIFFERENTIAL DIAGNOSIS

                                                              PATHOLOGY

                                                              • General Features

                                                                • Gross Pathologic & Surgical Features

                                                                  • Microscopic Features

                                                                    CLINICAL ISSUES

                                                                    • Presentation

                                                                      • Demographics

                                                                        • Natural History & Prognosis

                                                                          • Treatment

                                                                            DIAGNOSTIC CHECKLIST

                                                                            • Consider

                                                                              Selected References

                                                                              1. Dehkharghani S et al: Redefining normal facial nerve enhancement: healthy subject comparison of typical enhancement patterns--unenhanced and contrast-enhanced spin-echo versus 3D inversion recovery-prepared fast spoiled gradient-echo imaging. AJR Am J Roentgenol. 202(5):1108-13, 2014
                                                                              2. Hong HS et al: Enhancement pattern of the normal facial nerve at 3.0 T temporal MRI. Br J Radiol. 83(986):118-21, 2010
                                                                              3. Tabuchi T et al: Vascular permeability to fluorescent substance in human cranial nerves. Ann Otol Rhinol Laryngol. 111(8):736-7, 2002
                                                                              4. Martin-Duverneuil N et al: Contrast enhancement of the facial nerve on MRI: normal or pathological? Neuroradiology. 39(3):207-12, 1997
                                                                              5. Gebarski SS et al: Enhancement along the normal facial nerve in the facial canal: MR imaging and anatomic correlation. Radiology. 183(2):391-4, 1992