The presence of certain cutaneous findings may be clues to underlying cerebral dysraphism.

Skin findings on the scalp:

(1) scalp hair collar: scalp nodule (typically midline) surrounded by a ring of long, dark, coarse hairs

(2) hair tufts

(3) capillary vascular stain


The patient may have:

(1) aplasia cutis congenita

(2) meningothelial hamartoma

(3) benign fibrous tumor


Cerebral dysraphism may include:

(1) meningocele or encephalocele

(2) agenesis of the corpus callosum

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