Fig 1. Choroid dysplasia. Top row, left to right, coronal T1, T2, T1-GAD, and MRA sections. Bottom row, left, H&E–stained coronal histologic section. Bar = 200 µm. Note the thickened and somewhat disorganized choroid at left (arrows). Center and right, 3D segmented vessels with the ventricular system shown at full opacity (center) and no opacity (right). Vessels are shown from an anteroposterior (AP) view and are color-coded relative to the ventricular system with blue (outside), gold (traverse), red (inside), and cyan (exit or enter). Vessel analysis was performed upon all red vessels and upon the segments of the gold and cyan vessels lying within the region of interest. This case is tumor 19 in Table.