If they occur intracranially, they are extra-axially located and develop from the meninges.
Eveline Claus, Patrick Seynaeve, Jeroen Ceuppens, Alain Vanneste, Koenraad Verstraete 2017, 'Intracranial Solitary Fibrous Tumour', Journal of the Belgian Society of Radiologyhttps://www.jbsr.be/articles/1213. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Additionally, an area of intense uptake was observed intracranially.
Gilles N. Stormezand, Andor W. J. M. Glaudemans, Riemer H. J. A. Slart, Rudi A. J.O. Dierckx 2018, 'Incidental meningioma detected with [18F]-FDOPA PET/CT', European Journal of Hybrid Imaginghttp://link.springer.com/article/10.1186/s41824-018-0041-3. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
During endoscopic excision, the tumor was seen extending intracranially but remainingextradurally.
Subhro Ganguly, Surendra Gawarle, Prashant Keche 2018, 'Immature Teratoma of Nasal Septum: A Case Report', Iranian Journal of Otorhinolaryngologyhttp://ijorl.mums.ac.ir/article_11764_49ffe595543f93564f162fe3a9f834f4.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It invades intracranially more frequently than carcinomas of other glands in the head and neck.
Kavita Mardi, Vijay Kaushal, Hari Uppal 2011, 'Cytodiagnosis of intracranial metastatic adenoid cystic carcinoma: Spread from a primarytumor in the lacrimal gland', Journal of Cytologyhttp://www.jcytol.org/article.asp?issn=0970-9371;year=2011;volume=28;issue=4;spage=200;epage=202;aulast=Mardi. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Magnetic resonance imaging showed a tumor surrounding the optic nerve and extending intracranially, with enhancement following gadolinium injection.
Mário L.R. Monteiro, Allan Christian P. Gonçalves, Sheila Aparecida C. Siqueira, EloísaM.M. Gebrim 2012, 'Optic Nerve Sheath Meningioma in the First Decade of Life: Case Report and Reviewof the Literature', Case Reports in Ophthalmologyhttp://www.karger.com/Article/FullText/342261. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Endoscopic examination showed a friable mass in the superior aspect of the nasal septum, extending intracranially.
Poonam Sagar, Vikram Wadhwa, Ishwar Singh, Varuna Mallya, Pragya Rajpurohit 2018, 'Naso-Septal Tuberculosis Mimicking Dermoid in a 3-Year old Child', Iranian Journal of Otorhinolaryngologyhttp://ijorl.mums.ac.ir/article_11144_8daee58930ed265cd17bc3bc0ba5617d.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In one patient, microcatheter could not be passed, two patients bled intracranially, and three had nonintracranial bleeds.
Neeharika L Mathukumalli, Ram Murti Susarla, Mridula R Kandadai, Suryaprabha Turaga,Jabeen A Shaik, Suvarna Alladi, Meena A Kanikannan, Rupam Borgohain, Subhash Kaul 2016, 'Intrasinus thrombolysis in cerebral venous sinus thrombosis: Experience from a universityhospital, India', Annals of Indian Academy of Neurologyhttp://www.annalsofian.org/article.asp?issn=0972-2327;year=2016;volume=19;issue=3;spage=307;epage=311;aulast=Mathukumalli. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)