The patient, a 19-year-old white youth, was first seen on Feb. 26, 1959. He complained of an asymptomatic lesion above the medial aspect of the left eyebrow, present since birth. The lesion had become more elevated in the past five years and had developed two nodular areas at the inferior border in the past two years. Removal was requested for cosmetic reasons. On examination, the patient was noted to have a yellowish-tan linear lesion 2.5 cm. long and 0.3 cm. wide with its inferior margin beginning at the medial aspect of the left eyebrow. It had a verrucous appearance at the inferior margin and was elevated 0.2 cm. above the skin level. The clinical diagnosis was that of nevus sebaceus of Jadassohn. The lesion was excised. Histologically, hyperkeratosis and acanthosis were present. Large numbers of sebaceous glands were present, extending deeply into the dermis. Apocrine glands were present beneath the