Cerebriform intradermal melanocytic nevus is a cause of cutis verticis gyrata, a morphologic term which describes the hypertrophy and folding of the skin, typically occurring on the scalp, to present a gyrate or cerebriform appearance.
We report a 37-year-old woman with a 17×22cm soft, convoluted mass over most of the occipital, parietal, and temporal scalp. At birth, she had a small brownish macule on the occipital scalp that enlarged to form this extensive lesion.
Histologically,
nests of nevus cells were shown in the upper and the mid dermis. (Kor J Dermatol 1994 ; 32(3) : 488~492)
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