Evaluation of newborns with preauricular skin lesions
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All newborns should be screened for hearing loss, whether or not they have preauricular skin lesions. Newborns with these anomalies may be at increased risk of hearing impairment. (Strength of Recommendation [SOR]: C, based on small observational studies and expert opinion.) Although there is a reported association between renal tract abnormalities and isolated preauricular skin lesions in infants, studies that have used renal ultrasonography to evaluate these patients are inconclusive. Physicians should not perform renal imaging on newborns with preauricular skin lesions unless they have other congenital malformations. (SOR: C, based on small, observational, disease-oriented studies.)
American Family Physician, 85(10):993-998.