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Chapter 63. Nevus Sebaceus

Definition

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesion or as multiple lesions that follow Blaschko’s lines and, when systematized, is almost always associated with other congenital abnormalities.

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