fig3

Figure 3. Tuberculum sellae meningiomas can be small (A) or large (B) and are centered on the tuberculum sellae. They grow posterosuperiorly displacing the optic nerves superolaterally. Note the intrasellar extension and compression of the neighboring structures. DS: dorsum sellae; OC: optic chiasm; PG: pituitary gland; PS: planum sphenoidale; PST: pituitary stalk; TS: tuberculum sellae; III: third ventricle