Erosion Sellar Floor

In patients with a known pituitary microadenoma erosion or remodelling of the pituitary floor is a sign of inferior extension.

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. Chordoma of the clivus is frequently associated with erosion of the dorsum sellae and the sellar floor. Furthermore osteolysis of the dorsum sellae and clinoids sometimes occur in childhood leukemia and langerhans cell histiocyto. 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.

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. Erosion or destruction of the sella turcica can arise with any of numerous intracranial tumors including. 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. Another measurement important in transsphenoidal surgery is the thickness of the anterior sellar wall and sellar floor.