Preoperative high-resolution CT of the temporal bone in microtia

  • T. E. Mayer
  • H. Brückmann
  • R. Siegert
  • A. Witt
  • H. Weerda
Conference paper

Abstract

One hundred and forty temporal bones of microtic patients were examined by high-resolution CT. In minor microtia auditory canal stenosis and in major microtia atresia was predominant. The middle ear malformation depended on the severity of the auricular dysplasia. There were middle ear cavity anomalies in 90%, ossicle dysplasias in 97% (stapes 70%), oval window absence in 32%, labyrinth malformations in 16%, closed round window in 7%, facial canal displacement in up to 75% and vascular canal aberrations in 22% of microtia grade III. Multiplaner scanning or reformation of 1-mm slices (spinal CT) is necessary for preoperative planning. A neuroradiological score can be obtained.

Key words

Ear, congenital malformations Computed tomography 

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References

  1. 1.
    Mündnich K, Terrahe K (1979) Mißbildungen des Ohres. In: Berendes, Link, Zöllner(eds) Hals-Nasen-Ohrenheilkunde, 2nd edn. Thieme, Stuttgart, pp 1–49.Google Scholar
  2. 2.
    Lenz W (1963) Das Thalidomid-Syndrom. Fortschr Med 81: 148.Google Scholar
  3. 3.
    Weerda H (1988) Classification of congenital deformities of the auricle. Facial Plast Surg 5:385–388.PubMedCrossRefGoogle Scholar
  4. 4.
    Jahrsdoerfer RA (1992) Clinical aspects of temporal bone anomalies. AJNR 13:821–825.PubMedGoogle Scholar
  5. 5.
    Mattox DE, Nager GT, Levin LS (1991) Congenital aural atresia: embryology, pathology, classification, genetics and surgical management. In: Paparella MM, Shumrick DA (eds) Otolaryngology, 3rd edn. Saunders, Philadelphia, pp 1191–1225.Google Scholar
  6. 6.
    Swartz JD (1984) The facial nerve canal: CT analysis of the protruding Tympanic segment. Radiology 153:443–447.PubMedGoogle Scholar
  7. 7.
    Fowler EP (1961) Variations in the temporal bone course of the facial nerve. Laryngoscope 71: 937.PubMedCrossRefGoogle Scholar
  8. 8.
    Weerda H (1988) Reconstructive surgery of the auricle. Facial Plast Surg 5: 399–410.PubMedCrossRefGoogle Scholar
  9. 9.
    Aguilar EA, Jahrsdoerfer RA (1988) The surgical repair of congenital microtia and atresia. Otolaryngol Head Neck Surg 98: 600–606.PubMedGoogle Scholar
  10. 10.
    Jahrsdoerfer RA, Yeakley JW, Aguilar EA, Cole RR, Gray LC (1992) Grading system for the selection of patients with congenital aural atresia. Am J Otol 13: 6–12.PubMedGoogle Scholar
  11. 11.
    Murata K, Isono M, Ohta F, Yoshida A, Ishida O (1987) Quantitative analysis of inner ear anomalies by high resolution CT scanning of the temporal bone. J Otolaryngol 16: 133–136.PubMedGoogle Scholar
  12. 12.
    Mehra YN, Dubey SP, Mann SBS, Suri S (1988) Correlation between high-resolution computes tomography and surgical findings in congenital aural atresia. Arch Otolaryngol Head Neck Surg 114:137–141.PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • T. E. Mayer
    • 1
  • H. Brückmann
    • 1
  • R. Siegert
    • 2
  • A. Witt
    • 2
  • H. Weerda
    • 2
  1. 1.Institut für Radiologie-NeuroradiologieMedizinische UniversitätLübeckGermany
  2. 2.HNO-KlinikMedizinische UniversitätLübeckGermany

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