Erosion Sellar Floor

Erosion of anterior and posterior clinoids can be seen pituitary tumors e g.

Erosion sellar floor.

In the sellar type of sinus the thickness of the anterior sellar wall ranged from 0 1 to 0 7 mm mean 0 4 mm compared with 0 3 to 1 5 mm mean 0 7 mm for the presellar type. Primary or secondary neoplasms including. Gliomas of the optic nerve and hypothalamus may erode the clinoid processes. Enlargement with erosion of anterior cortex of dorsum sellae proceeds to the floor of the sella and may result in complete destruction of the dorsum.

Focal erosion of the lateral margins secondary to an aneurysm focal erosions of the floor by pituitary lesions and selective erosion of the posteroinferior floor secondary to chronic increased intracranial pressure 3 4 are some of the more dependable findings. Chordoma of the clivus is frequently associated with erosion of the dorsum sellae and the sellar floor. Erosion or remodelling of the pituitary floor is of limited help since it may be a normal finding. In patients with a known pituitary microadenoma erosion or remodelling of the pituitary floor is a sign of inferior extension.

Mucocele of the sphenoid sinus. Erosion or destruction of the sella turcica can arise with any of numerous intracranial tumors including.