Surgical management of tuberculum sellae meningioma: role of selective extradural anterior clinoidectomy.
Surgical management of tuberculum sellae meningiomas: involvement of the optic canal and visual outcome.
High incidence of optic canal involvement in tuberculum sellae meningiomas: rationale for aggressive skull base approach.
As a result cranial measurements of congential bilateral blind people are different from sighted people, this difference is clear in the front of basion and dorsum sellae
meningiomas: clinical manifestation, radiologic diagnosis, surgery and visual outcome.
Diaphragma sellae meningiomas are rare lesions and may be hard to differ from pituitary adenomas (1).
Although, many authors prefer the transcranial approach for intrasellar meningiomas, Kinjo et al suggested the transcranial-transsphenoidal approach because of its wider exposure and safer hemostasis (3); and Jallo and Benjamin suggested a pterional craniotomy with microsurgical dissection of the sylvian fissure allows access to tuberculum sellae meningiomas with minimal neurological and ophthalmological morbidity (5).
These tumors can cause to enlargement of the sella turcica and destruction of the floor of the sellae (8).
The anterior edge of the pituitary fossa is completed laterally by the middle clinoid process and the posterior boundary is formed by the dorsum sellae, the superolateral angles of which are expanded to form the posterior clinoid process (1).
Posteriorly, the sella turcica is bounded by a square dorsum sellae, the superior edges of which bear the PCP (1).
Surgeons have drilled the PCP and the dorsum sellae, in order to expose a length of basilar artery, that includes its bifurcation (5).
In a recent study by Axelsson et al in 2004, shape of the sella turcica was divided into six main types; normal sella turcica, oblique anterior wall, double - contoured sella, sella turcica bridge, irregularity (notch- ing) in the posterior part of the sella and pyramidal shape of the dorsum sellae