Erosion Sellar Floor

Furthermore osteolysis of the dorsum sellae and clinoids sometimes occur in childhood leukemia and langerhans cell histiocyto.

Erosion sellar floor.

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. 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. Erosion of anterior and posterior clinoids can be seen pituitary tumors e g. Erosion or remodelling of the pituitary floor is of limited help since it may be a normal finding.

Another measurement important in transsphenoidal surgery is the thickness of the anterior sellar wall and sellar floor. Thickening of the tuberculum or of the clinoid processes and blistering of the planum sphenoidale have frequently been reported in association with meningiomas of the sella turcica. Primary or secondary neoplasms including. Mucocele of the sphenoid sinus.

In patients with a known pituitary microadenoma erosion or remodelling of the pituitary floor is a sign of inferior extension. Gliomas of the optic nerve and hypothalamus may erode the clinoid processes.