Suprasellar meningioma classification
Suprasellar meningiomas can be classified as tubercular, combined, or diaphragmatic based on preoperative MRI.
Exclusively tubercular meningiomas (type A) require only a supradiaphragmatic approach.
Tumor involvement of the sellar diaphragm (type B or C) requires resection of the diaphragm and thus a combined infra- and supradiaphragmatic approach 1).
Liu divided it into
Group A - planum sphenoidale meningioma
Group B - tuberculum sellae meningioma
Group C -diaphragma sellae meningioma (DSM), based on their growth pattern in relation to the optic pathway and pituitary stalk, group C was then divided into groups C1 and C2 2).
For Suri et al. the anterior clinoid process, and sphenoidal planum, account for about 5% to 10% of intracranial meningiomas 3).
The tumour is located in the midline at the base of the skull and originates in the sella 4).