Meatal atresia and hearing loss. Autosomal dominant and autosomal recessive inheritance.

Thirty-six ears of 33 patients with a type II unilateral or bilateral meatal atresia were accepted for reconstructive surgery. Five families of these patients had a history of congenital aural atresia. In one the father and his son had unilateral microtia. Four families counted 2 affected sibs each. The autosomal dominant and autosomal recessive patterns of inheritance are discussed.