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Ultrasound
Diagnosis
Head and Neck
Lumps and Bumps
Solid
Infrahyoid Carotid Space Vagus Schwannoma
Infrahyoid Carotid Space Vagus Schwannoma
Eunice Y. L. Dai, MBBS, FRCR; H. Y. Yuen, MBChB, FRCR; Anil T. Ahuja, MD, FRCR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Diagnostic Checklist

          TERMINOLOGY

          • Synonyms

            • Neuroma, neurilemmoma

          • Definitions

            • Benign tumor of Schwann cells that wrap around vagus nerve in carotid space (CS)

          IMAGING

          • General Features

            • Ultrasonographic Findings

              • 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. Graffeo CS et al: Preoperative diagnosis of vagal and sympathetic cervical schwannomas based on radiographic findings. J Neurosurg. 126(3):690-697, 2017
                                        2. Skolnik AD et al: Cranial nerve schwannomas: diagnostic imaging approach. Radiographics. 36(5):1463-77, 2016
                                        3. Anil G et al: CT and MRI evaluation of nerve sheath tumors of the cervical vagus nerve. AJR Am J Roentgenol. 197(1):195-201, 2011
                                        4. Ahuja AT et al: Diagnostic Imaging: Ultrasound. 1st ed. Salt Lake City: Amirsys, Inc. 11-102-105, 2007
                                        5. Harnsberger HR et al: Diagnostic Imaging: Head & Neck. 1st ed. Salt Lake City: Amirsys, Inc. III-8-24-27, 2004
                                        6. Evans RM et al: Imaging in Head and Neck Cancer: A Practical Approach. London: Greenwich Medical Media. 199-214, 2003
                                        7. Leu YS et al: Extracranial head and neck schwannomas: a review of 8 years experience. Acta Otolaryngol. 122(4):435-7, 2002
                                        8. Colreavy MP et al: Head and neck schwannomas--a 10 year review. J Laryngol Otol. 114(2):119-24, 2000
                                        9. Gilmer-Hill HS et al: Neurogenic tumors of the cervical vagus nerve: report of four cases and review of the literature. Neurosurgery. 46(6):1498-503, 2000
                                        10. King AD et al: Sonography of peripheral nerve tumors of the neck. AJR Am J Roentgenol. 169(6):1695-8, 1997
                                        11. Yumoto E et al: Parapharyngeal vagal neurilemmoma extending to the jugular foramen. J Laryngol Otol. 110(5):485-9, 1996
                                        12. Park CS et al: Neurilemmomas of the cervical vagus nerve. Head Neck. 13(5):439-41, 1991
                                        13. Heitmiller RF et al: Vagal schwannoma. Ann Thorac Surg. 50(5):811-3, 1990
                                        14. Silver AJ et al: Computed tomography of the carotid space and related cervical spaces. Part II: Neurogenic tumors. Radiology. 150(3):729-35, 1984
                                        Related Anatomy
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                                        Related Differential Diagnoses
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                                        References
                                        Tables

                                        Tables

                                        KEY FACTS

                                        • Terminology

                                          • Imaging

                                            • Top Differential Diagnoses

                                              • Diagnostic Checklist

                                                TERMINOLOGY

                                                • Synonyms

                                                  • Neuroma, neurilemmoma

                                                • Definitions

                                                  • Benign tumor of Schwann cells that wrap around vagus nerve in carotid space (CS)

                                                IMAGING

                                                • General Features

                                                  • Ultrasonographic Findings

                                                    • 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. Graffeo CS et al: Preoperative diagnosis of vagal and sympathetic cervical schwannomas based on radiographic findings. J Neurosurg. 126(3):690-697, 2017
                                                                              2. Skolnik AD et al: Cranial nerve schwannomas: diagnostic imaging approach. Radiographics. 36(5):1463-77, 2016
                                                                              3. Anil G et al: CT and MRI evaluation of nerve sheath tumors of the cervical vagus nerve. AJR Am J Roentgenol. 197(1):195-201, 2011
                                                                              4. Ahuja AT et al: Diagnostic Imaging: Ultrasound. 1st ed. Salt Lake City: Amirsys, Inc. 11-102-105, 2007
                                                                              5. Harnsberger HR et al: Diagnostic Imaging: Head & Neck. 1st ed. Salt Lake City: Amirsys, Inc. III-8-24-27, 2004
                                                                              6. Evans RM et al: Imaging in Head and Neck Cancer: A Practical Approach. London: Greenwich Medical Media. 199-214, 2003
                                                                              7. Leu YS et al: Extracranial head and neck schwannomas: a review of 8 years experience. Acta Otolaryngol. 122(4):435-7, 2002
                                                                              8. Colreavy MP et al: Head and neck schwannomas--a 10 year review. J Laryngol Otol. 114(2):119-24, 2000
                                                                              9. Gilmer-Hill HS et al: Neurogenic tumors of the cervical vagus nerve: report of four cases and review of the literature. Neurosurgery. 46(6):1498-503, 2000
                                                                              10. King AD et al: Sonography of peripheral nerve tumors of the neck. AJR Am J Roentgenol. 169(6):1695-8, 1997
                                                                              11. Yumoto E et al: Parapharyngeal vagal neurilemmoma extending to the jugular foramen. J Laryngol Otol. 110(5):485-9, 1996
                                                                              12. Park CS et al: Neurilemmomas of the cervical vagus nerve. Head Neck. 13(5):439-41, 1991
                                                                              13. Heitmiller RF et al: Vagal schwannoma. Ann Thorac Surg. 50(5):811-3, 1990
                                                                              14. Silver AJ et al: Computed tomography of the carotid space and related cervical spaces. Part II: Neurogenic tumors. Radiology. 150(3):729-35, 1984