Sagittal T2 WI shows:
Mid-line subcutaneous cystic lesion (atertic cephalocele) (AC),
Vertically oriented persistent primitive falcine vein (open arrow) & an adjacent hardly distinct thin fibrous stalk (solid arrow) are pointing to and connecting the cephalocele through the calvarial defect.
Prominent superior cerebellar cistern & suprapineal recess.
Axial T2 WI shows:
Fenestration of the superior sagittal sinus (open arrows) surrounding the cephalocele fibrous stalk (Solid arrow)
Coronal T1 WI shows:
Peaked configuration of the tentorium.