Figure 3a. Adamantinomatous craniopharyngioma in a 12-year-old boy with headache and blurred vision. Sagittal unenhanced (a) and coronal contrast-enhanced (b) T1-weighted MR images show a lobulated suprasellar tumor with intrasellar extension. The tumor is formed predominantly of multiple cysts with varying signal intensities that show thin mural contrast enhancement (arrows in b). Note the associated asymmetric lateral ventricular dilatation. The diagnosis (adamantinomatous craniopharyngioma) was confirmed at surgery. (Case courtesy of Yasser Ragab, MD, Cairo, Egypt.)