Major auricular malformations due to Accutane (isotretinoin).

Vitamin A and vitamin A derivatives have been described as etiologic factors for a number of congenital malformations. Two infants are presented with major auricular malformations including anotia and severe microtia. The infants were products of a pregnancy complicated by Accutane ingestion during the first trimester. Both infants had associated central nervous system malformations. With the increasing use of Accutane for the treatment of cystic acne in young women of child-bearing age, the dangers of teratogenesis in the head and neck area are greatly increased. This presentation will review two such cases as well as give an overview of the embryogenesis and teratogenesis of the auricle.