Microtia NYC: What Are the Different Treatment Options? Microtia is an ear abnormality where the external part of a child’s ear is usually malformed or underdeveloped. This can affect one or both ears, and in about 90% of the cases, it occurs unilaterally. The estimated source of microtia NYC is about 1 in 10,000 live births per year, while bilateral microtia occurs only in 1 to 25,000 live births per year.
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