Hair-Collar-and-Tuft-Sign Associated with an Atretic Cephalocele and a Persistent Primitive Falcine Sinus

A male newborn was hospitalized because of an elastic nodule midline in the interparietal scalp (Figure 1, A). The lesion appeared slightly hypertrichotic, about 1 cm in diameter, overlying an erythematous stain. He was neurologically normal; ultrasound (Figure 2, A) and brain magnetic resonance imaging were performed (Figure 2, B). Imaging suggested an atretic cephalocele in the presence of a rare persistent primitive falcine sinus,1,2 associated with focal duplication of the superior sagittal sinus.

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