Formation of the lesion is aimed at the anteroposterior plane at the level of the planum sphenoidale
between 6-18 mm from the midline and stretching 20 mm antero-posteriorly (3, 13, 14).
Salinero, "Coincidental pituitary adenoma and planum sphenoidale
meningioma mimicking a single tumor," Endocrinologia y Nutricion, vol.
This tumor involved the medial orbital wall, the cribriform plate, and the planum sphenoidale
; evidence of intracranial extension was also seen (figure 1).
Effect of early optic canal unroofing on the outcome of visual functions in surgery for meningiomas of the tuberculum sellae and planum sphenoidale
. Neurosurgery 2008;62:839-44.
Meningiomas affecting the visual pathway originate from the basal meninges of tuberculum sellae, planum sphenoidale
, chiasmatic sulcus and from diaphragma sellae.
Meningiomas of the sellar/ parasellar region can arise from cavernous sinus, planum sphenoidale
, diaphragma sellae, anterior clinoid processes, tuberculum sellae, medial lesser wing of sphenoid and optic nerve sheath.
(3,4) These tumors most often arise from the sphenoid wing, but additional sites include clinoid, planum sphenoidale
, frontoparietal area, and olfactory groove.
Meningiomas in this region originate from the tuberculum sella, anterior clinoid processes, diaphragma sellae, planum sphenoidale
and upper clivus (Figure 9).
Endoscopic surgical procedure of cases Transsphenoidal pituitary surgery 60 Clivus biopsy 1 Anterior skull base CSF leaks 8 Endoscopic medial maxillectomy 9 for inverting papilloma Malignant melanoma 3 Angiofibroma 1 Ossifying fibroma 3 Sphenoid sinus angioma 1 Meningocele 1 Intranasal dermoid cyst 1 Orbital apex cyst 1 Optico-carotid recess fungal mass 4 Removal foreign body (bullet) 1 from planum sphenoidale
This allows to safely approach the sella turcica, optic nerve, tuberculum sella and planum sphenoidale
for surgeons, in some lesions including skull base lesions and cerebrospinal fluid leaks (Wiebracth & Zimmer).
The fatty mass seen on fat-saturated MRI actually represented yellow marrow in the corpus sphenoidale
instead of air.
The MRI demonstrated a homogeneously enhancing sellar/suprasellar lesion that extended to the planum sphenoidale
causing optic chiasmal compression as well as compression of the right optic nerve.