Ear Reconstruction Workup

Updated: Apr 12, 2019
  • Author: Joseph L Leach, Jr, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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Workup

Laboratory Studies

Unless indicated by the patient's overall medical condition, no particular laboratory studies are obtained routinely.

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Imaging Studies

Aural atresia repair requires a fine cut noncontrast axial and coronal CT scan of the temporal bones. The timing of this study is not critical and may be deferred until the otologic procedure is anticipated.

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Diagnostic Procedures

For microtia repair, no routine diagnostic procedures are necessary, unless a thorough history and physical examination reveal that particular studies are necessary.

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Histologic Findings

Because microtia consists of malformed cartilages and skin appendages, no routine histologic examination is indicated. In fact, no pathologic specimen is obtained under normal circumstances.

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Staging

Meurmann staged microtia as follows:

  • Grade 1: Malformed auricle of smaller than normal size but retaining characteristic features

  • Grade 2: Rudimentary auricle consisting of a low oblong elevation hook formed at the cranial end corresponding to the helix

  • Grade 3: A more defective auricle with a malformed lobule and the rest of the pinna being totally absent

Grade 3 is the abnormality most commonly encountered in patients desiring reconstruction. Note that anotia is not considered under the above classification.

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