Such meningiomas are thought to arise from arachnoid cap cells in pial membrane, tela choroidea, or choroid plexus.
Prithvi Varghese, Julio Chacko Kandathil, Jayasree Govindan, Rashmi R., Muhammed JasimAbdul Jalal 2017, 'Meningioma in Lateral Cerebellomedullary Cistern without Dural Attachment', Indian Journal of Neurosurgeryhttp://www.thieme-connect.de/DOI/DOI?10.1055/s-0037-1602754. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)