D2I2.
congenital

Goldenhar syndrome

Goldenhar is a rare defect characterized by incomplete development of the ear, nose, soft palate, lip and mandible on usually one side of the body. Common manifestations include limbal dermoids, preauricular skin tags and strabismus. It is associated with anomalous development of the first branchial arch and second branchial arch.

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Plain-language summary adapted from Wikipedia. Not medical advice.