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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Laboratory Studies

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


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.


Diagnostic Procedures

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


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.



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.