Inner ear malformations and hearing loss in linear nevus sebaceous syndrome. 
Linear nevus sebaceous syndrome (LNSS) is a rare disorder comprising of nevus sebaceous, seizures, and mental retardation.  While extensive literature describe the dermatologic, neurologic, as well as ophthalmologic manifestations of this LNSS, otologic problems have not been previously described.  The objective of this report is to describe the otologic manifestation of a patient with LNSS.  A child with LNSS was referred to the Otologic clinic for evaluation of hearing loss.  Pertinent findings on history, physical findings, audiometric testing, and imaging studies are discussed.  Audiometric testing showed bilateral conductive hearing loss.  Computerized tomography of the temporal bone demonstrated widened internal auditory canals and dysplastic lateral semicircular canals.  LNSS can be associated with hearing impairment and inner ear malformations.  The evaluation of a child with LNSS should include otologic and audiologic testing.