Figure 6b. Vertically positioned straight sinus with persistent fetal anatomy. Sagittal T2-weighted MR image (a) and sagittal (b) and coronal (c) MR venograms demonstrate a vertically positioned straight sinus (black arrow in a, arrow in b) and a fenestrated superior sagittal sinus (arrowheads in c) resulting from deflection around the tract of a histologically proved atretic parietal encephalocele (white arrows in a).