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EAC Exostoses
H. Ric Harnsberger, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Synonyms

              • Surfer ear; cold water ear
            • Definitions

              • Benign overgrowth of bony EAC in response to chronic cold water exposure

            IMAGING

            • General Features

              • CT 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. Spielmann PM et al: Surgical management of external auditory canal lesions. J Laryngol Otol. 127(3):246-51, 2013
                                    2. Carbone PN et al: External auditory osteoma. Head Neck Pathol. 6(2):244-6, 2012
                                    3. Nakanishi H et al: Incidence of external auditory canal exostoses in competitive surfers in Japan. Otolaryngol Head Neck Surg. 145(1):80-5, 2011
                                    4. House JW et al: External auditory exostoses: evaluation and treatment. Otolaryngol Head Neck Surg. 138(5):672-8, 2008
                                    5. Sheard PW et al: Prevalence and severity of external auditory exostoses in breath-hold divers. J Laryngol Otol. 122(11):1162-7, 2008
                                    6. Hetzler DG: Osteotome technique for removal of symptomatic ear canal exostoses. Laryngoscope. 117(1 Pt 2 Suppl 113):1-14, 2007
                                    7. Timofeev I et al: Exostoses of the external auditory canal: a long-term follow-up study of surgical treatment. Clin Otolaryngol Allied Sci. 29(6):588-94, 2004
                                    8. Vasama JP: Surgery for external auditory canal exostoses: a report of 182 operations. ORL J Otorhinolaryngol Relat Spec. 65(4):189-92, 2003
                                    9. Kroon DF et al: Surfer's ear: external auditory exostoses are more prevalent in cold water surfers. Otolaryngol Head Neck Surg. 126(5):499-504, 2002
                                    10. Smelt GJ: Exostoses of the internal auditory canal. J Laryngol Otol. 98(4):347-50, 1984
                                    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

                                              • Synonyms

                                                • Surfer ear; cold water ear
                                              • Definitions

                                                • Benign overgrowth of bony EAC in response to chronic cold water exposure

                                              IMAGING

                                              • General Features

                                                • CT 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. Spielmann PM et al: Surgical management of external auditory canal lesions. J Laryngol Otol. 127(3):246-51, 2013
                                                                      2. Carbone PN et al: External auditory osteoma. Head Neck Pathol. 6(2):244-6, 2012
                                                                      3. Nakanishi H et al: Incidence of external auditory canal exostoses in competitive surfers in Japan. Otolaryngol Head Neck Surg. 145(1):80-5, 2011
                                                                      4. House JW et al: External auditory exostoses: evaluation and treatment. Otolaryngol Head Neck Surg. 138(5):672-8, 2008
                                                                      5. Sheard PW et al: Prevalence and severity of external auditory exostoses in breath-hold divers. J Laryngol Otol. 122(11):1162-7, 2008
                                                                      6. Hetzler DG: Osteotome technique for removal of symptomatic ear canal exostoses. Laryngoscope. 117(1 Pt 2 Suppl 113):1-14, 2007
                                                                      7. Timofeev I et al: Exostoses of the external auditory canal: a long-term follow-up study of surgical treatment. Clin Otolaryngol Allied Sci. 29(6):588-94, 2004
                                                                      8. Vasama JP: Surgery for external auditory canal exostoses: a report of 182 operations. ORL J Otorhinolaryngol Relat Spec. 65(4):189-92, 2003
                                                                      9. Kroon DF et al: Surfer's ear: external auditory exostoses are more prevalent in cold water surfers. Otolaryngol Head Neck Surg. 126(5):499-504, 2002
                                                                      10. Smelt GJ: Exostoses of the internal auditory canal. J Laryngol Otol. 98(4):347-50, 1984