====== Tentorial meningioma classification ======

The classification system for [[tentorial meningioma]]s proposed by [[Gazi Yasargil]] is the most accurate and emphasizes the surgical anatomy.

{{::tentorialmeningiomayasargil.jpg?400|}}

1. T1–T2 (medial “incisural” meningioma)

2. T3–T8 (falcotentorial meningioma)

3. T4 (paramedian “intermediate” meningioma)

4. T5 (peritorcular “torcular” meningioma)

5. T6–T7 (lateral tentorial meningioma)

T1-T3 the lesions on the inner ring or lesions of the incisura - anterior, lateral and posterior. 

T4 and T8 are intermediate ring lesions with T8 tumors involving the falcotentorial junction. 

T5-T7 are lesions on the posterior ring, involving the torcular, transverse sinus, and transverse-sigmoid junction respectively
((Yasargil MG. Meningiomas. Microneurosurgery. In: Yasargil MG, editor. Microneurosurgery of CNS tumors. Vol. 4B. ***Publication city is missing: Stuttgart Georg, Thieme; 1996. pp. 134–65.)).


{{ tentorialmeningiomasclasification.jpg|}}

[[Tentorial meningioma]]s are a broad and consistent category of tumors but their definition is still unclear and their classification uncertain.

Since the [[tentorium]] has a large intracranial area, tumors originating from it may vary widely in the actual location of their mass. [[Supratentorial]], [[infratentorial]], [[incisural]], and posterolateral arc terms that will be used to suggest the principal location of each tumor. 

===== Tentorial notch meningioma =====

[[Tentorial notch meningioma]].

===== Incisural tentorial meningioma =====

[[Incisural tentorial meningioma]].

===== Falcotentorial meningioma =====

[[Falcotentorial meningioma]].

===== Lateral tentorial meningioma =====

[[Lateral tentorial meningioma]].

===== Torcular meningioma =====

[[Torcular meningioma]].

===== Bassiouni's classification =====