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Symptoms of Microtia

The following features are indicative of Microtia:
  • pinna (external ear) is underdeveloped

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Common Causes of Microtia

The following are the most common causes of Microtia:
  • mutation in the HOXA2 gene
  • taking Accutane (isotretinoin) during pregnancy

Risk Factors for Microtia

The following factors may increase the likelihood of Microtia:
  • maternal diabetes
  • low carbohydrates and folic acid maternal diet

Prevention of Microtia

Yes, it may be possible to prevent Microtia. Prevention may be possible by doing the following:
  • intake carbohydrates diet
  • consume folic acid-rich diet
  • avoid alcohol during pregnancy
  • avoid tobacco

Occurrence of Microtia

Number of Cases

The following are the number of Microtia cases seen each year worldwide:
  • Widely occurring between 500K - 1 Million cases

Common Age Group

Microtia most commonly occurs in the following age group:
  • At birth

Common Gender

Microtia can occur in any gender.

Lab Tests and Procedures for Diagnosis of Microtia

The following lab tests and procedures are used to detect Microtia:
  • BAER test (Brainstem Auditory Response Test): To determine the hearing problem
  • CT scan (Computed tomography): To provide a picture of the ear.

Complications of Microtia if untreated

It is not know if Microtia causes complications if left untreated.

Procedures for Treatment of Microtia

The following procedures are used to treat Microtia:
  • Rib cartilage graft reconstruction: To sculpture the patient's own rib cartilage into the form of its ear
  • Ear reconstruction using a polyethylene plastic implant: It allows the individual's tissue to grow into the material and the it's own tissue flap, to construct a new ear
  • Ear prosthesis: These are skin coloured silicone attachments, attached using with titanium screws or adhesive into the skull

Last updated date

This page was last updated on 2/04/2019.
This page provides information for Microtia.

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