Erosion Sellar Floor

Gliomas of the optic nerve and hypothalamus may erode the clinoid processes.

Erosion sellar floor.

Mucocele of the sphenoid sinus. Furthermore osteolysis of the dorsum sellae and clinoids sometimes occur in childhood leukemia and langerhans cell histiocyto. 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. 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. 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. Another measurement important in transsphenoidal surgery is the thickness of the anterior sellar wall and sellar floor.