A male newborn had a large cerebriform tumor covering his shoulders and almost the entire surface of his back. After exclusion of further abnormalities, the diagnosis of cerebriform intradermal nevus was made. This particular variant of giant melanocytic nevus should always be differentiated from cutis verticis gyrata, if located on the vertex. The clinical manifestation of cerebriform intradermal nevi as giant melanocytic nevi on the back is extremely rare, with only one instance reported to date. Such nevi are a therapeutic challenge, particularly if the skin lesion covers a large surface of the body, as in the patient presented here.
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