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Cochlear Incomplete Partition Type I (IP-I)
Caroline D. Robson, MBChB
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          TERMINOLOGY

          • Abbreviations

            • Cochlear incomplete partition type I (IP-I)
          • Synonyms

            • Cystic cochleovestibular malformation (CCVM)
          • Definitions

            • Incomplete cochlear partition type I: Absent internal structure of entire cochlea
              • Cochlear IP-I
                • Milder form of IP-I confined to cochlea
              • CCVM
                • Least differentiated manifestation of IP-I involving cochlea, vestibule, & semicircular canals (SCCs)

          IMAGING

          • General Features

            • CT Findings

              • MR Findings

                • Imaging Recommendations

                  DIFFERENTIAL DIAGNOSIS

                    CLINICAL ISSUES

                    • Presentation

                      • Natural History & Prognosis

                        • Treatment

                          Selected References

                          1. Suk Y et al: Surgical outcomes after cochlear implantation in children with incomplete partition type I: comparison with deaf children with a normal inner ear structure. Otol Neurotol. 36(1):e11-7, 2015
                          2. Kontorinis G et al: Radiological diagnosis of incomplete partition type I versus type II: significance for cochlear implantation. Eur Radiol. 22(3):525-32, 2012
                          3. Sennaroglu L: Cochlear implantation in inner ear malformations--a review article. Cochlear Implants Int. 11(1):4-41, 2010
                          4. Chadha NK et al: Bilateral cochlear implantation in children with anomalous cochleovestibular anatomy. Arch Otolaryngol Head Neck Surg. 135(9):903-9, 2009
                          5. Sennaroglu L et al: Surgical results of cochlear implantation in malformed cochlea. Otol Neurotol. 27(5):615-23, 2006
                          6. Sennaroglu L et al: Unpartitioned versus incompletely partitioned cochleae: radiologic differentiation. Otol Neurotol. 25(4):520-9; discussion 529, 2004
                          7. Sennaroglu L et al: A new classification for cochleovestibular malformations. Laryngoscope. 112(12):2230-41, 2002
                          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

                                  TERMINOLOGY

                                  • Abbreviations

                                    • Cochlear incomplete partition type I (IP-I)
                                  • Synonyms

                                    • Cystic cochleovestibular malformation (CCVM)
                                  • Definitions

                                    • Incomplete cochlear partition type I: Absent internal structure of entire cochlea
                                      • Cochlear IP-I
                                        • Milder form of IP-I confined to cochlea
                                      • CCVM
                                        • Least differentiated manifestation of IP-I involving cochlea, vestibule, & semicircular canals (SCCs)

                                  IMAGING

                                  • General Features

                                    • CT Findings

                                      • MR Findings

                                        • Imaging Recommendations

                                          DIFFERENTIAL DIAGNOSIS

                                            CLINICAL ISSUES

                                            • Presentation

                                              • Natural History & Prognosis

                                                • Treatment

                                                  Selected References

                                                  1. Suk Y et al: Surgical outcomes after cochlear implantation in children with incomplete partition type I: comparison with deaf children with a normal inner ear structure. Otol Neurotol. 36(1):e11-7, 2015
                                                  2. Kontorinis G et al: Radiological diagnosis of incomplete partition type I versus type II: significance for cochlear implantation. Eur Radiol. 22(3):525-32, 2012
                                                  3. Sennaroglu L: Cochlear implantation in inner ear malformations--a review article. Cochlear Implants Int. 11(1):4-41, 2010
                                                  4. Chadha NK et al: Bilateral cochlear implantation in children with anomalous cochleovestibular anatomy. Arch Otolaryngol Head Neck Surg. 135(9):903-9, 2009
                                                  5. Sennaroglu L et al: Surgical results of cochlear implantation in malformed cochlea. Otol Neurotol. 27(5):615-23, 2006
                                                  6. Sennaroglu L et al: Unpartitioned versus incompletely partitioned cochleae: radiologic differentiation. Otol Neurotol. 25(4):520-9; discussion 529, 2004
                                                  7. Sennaroglu L et al: A new classification for cochleovestibular malformations. Laryngoscope. 112(12):2230-41, 2002