Soft tissue attenuating mass, which is most likely arising from the sella turcica with predominant suprasellar extension, exerts significant mass effect onto optic chiasm and bilateral foramen of Monro superiorly. Due to the compression onto the foramen of Monro, disproportionate dilatation of bilateral lateral ventricles with periventricular lucency represents acute obstructive hydrocephalus.
The sellar soft tissue mass has "snowman" or "figure of eight" configurations on coronal view.
Posterosuperiorly, the suprasellar portion of the mass indents onto the superior margin of midbrain.
Inferiorly, bone remodeling of the sella turcica suggests of chronicity.
Laterally, no obvious extension into bilateral cavernous sinuses.