Linear sebaceous nevus syndrome.

A boy with linear sebaceous nevus syndrome was followed up to 3 years of age, at which time he died of pneumonia. The lesions of nevus sebaceus were located in the midline and on both sides of the face, and there were partial colobomata of the right outer canthus continuous with pseudopterygium and of the left upper eyelid. At 2 months of age, the patient developed infantile spasms. At 1 year, electroencephalography revealed hypsarrhythmia, and left carotid angiography showed an arteriovenous malformation. At 2 years, the mental retardation and delayed motor development were detected.