Abstract
This chapter reviews background information about the incidence, risk factors, genetics, recurrence risk, family history and epidemiology of isolated and syndromic ear anomalies. The discussion on the differential diagnosis of ear anomalies summarizes its common causes, including teratogenic agents (isotretinoin, maternal diabetes, mycophenylate), chromosome anomalies (aneuploidy, 22q11 deletion), common sporadic multiple congenital anomaly syndromes (Hemifacial microsomia/Goldenhar), and Mendelian disorders that are primarily craniofacial (Treacher-Collins and other mandibulofacial dysostoses) and others that include malformations in other organ systems (CHARGE). The chapter gives recommendations for evaluation and management. A clinical case presentation features a child with mycophenylate embryopathy, who had been incorrectly diagnosed with Treacher Collins syndrome.
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