Microtia

Microtia meaning 'small ear' is a deformation of the outer ear. Over 90% of the time, only one ear is affected, but both ears can be affected. More boys are affected than girls. The right ear is more affected than the left. One in 1000 people have microtia. It can affect hearing. There are four grades of microtia:
Grade III is most common, and can be corrected by surgery.