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Pediatrics
Diagnosis
Head and Neck
Temporal Bone and Skull Base
Cochlear Hypoplasia
Cochlear Hypoplasia
Surjith Vattoth, MD, FRCR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Abbreviations

                • Cochlear hypoplasia (CH)

              • Definitions

                • Cochlear underdevelopment: External dimensions < normal cochlea with internal architecture deformities
                • Term cochlea with 1.5 turns used to define CH (especially CH type III; cochlea with < 2 turns)
                  • Difficult to count number of turns on CT/MR in CH
                  • Avoid this term for cochlear incomplete partition type II

              IMAGING

              • General Features

                • CT Findings

                  • MR Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Staging, Grading, & Classification

                            • Gross Pathologic & Surgical Features

                              • Microscopic Features

                                CLINICAL ISSUES

                                • Presentation

                                  • Treatment

                                    DIAGNOSTIC CHECKLIST

                                    • Consider

                                      • Image Interpretation Pearls

                                        Selected References

                                        1. Sennaroğlu L et al: Classification and current management of inner ear malformations. Balkan Med J. 34(5):397-411, 2017
                                        2. Sennaroglu L: Histopathology of inner ear malformations: Do we have enough evidence to explain pathophysiology? Cochlear Implants Int. 17(1):3-2, 2016
                                        3. Sennaroglu L: Cochlear implantation in inner ear malformations--a review article. Cochlear Implants Int. 11(1):4-41, 2010
                                        4. Teissier N et al: Computed tomography measurements of the normal and the pathologic cochlea in children. Pediatr Radiol. 40(3):275-83, 2010
                                        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

                                                    • Abbreviations

                                                      • Cochlear hypoplasia (CH)

                                                    • Definitions

                                                      • Cochlear underdevelopment: External dimensions < normal cochlea with internal architecture deformities
                                                      • Term cochlea with 1.5 turns used to define CH (especially CH type III; cochlea with < 2 turns)
                                                        • Difficult to count number of turns on CT/MR in CH
                                                        • Avoid this term for cochlear incomplete partition type II

                                                    IMAGING

                                                    • General Features

                                                      • CT Findings

                                                        • MR Findings

                                                          • Imaging Recommendations

                                                            DIFFERENTIAL DIAGNOSIS

                                                              PATHOLOGY

                                                              • General Features

                                                                • Staging, Grading, & Classification

                                                                  • Gross Pathologic & Surgical Features

                                                                    • Microscopic Features

                                                                      CLINICAL ISSUES

                                                                      • Presentation

                                                                        • Treatment

                                                                          DIAGNOSTIC CHECKLIST

                                                                          • Consider

                                                                            • Image Interpretation Pearls

                                                                              Selected References

                                                                              1. Sennaroğlu L et al: Classification and current management of inner ear malformations. Balkan Med J. 34(5):397-411, 2017
                                                                              2. Sennaroglu L: Histopathology of inner ear malformations: Do we have enough evidence to explain pathophysiology? Cochlear Implants Int. 17(1):3-2, 2016
                                                                              3. Sennaroglu L: Cochlear implantation in inner ear malformations--a review article. Cochlear Implants Int. 11(1):4-41, 2010
                                                                              4. Teissier N et al: Computed tomography measurements of the normal and the pathologic cochlea in children. Pediatr Radiol. 40(3):275-83, 2010
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