=====Carotid clival window=====
The CCW is delimited by the paraclival segment of the [[internal carotid artery]] ICA anterolaterally, the [[petrous bone]] posterolaterally, the clival dura medially, the synchondrosis inferiorly, and the [[cavernous sinus]] superiorly; therefore, this approach exposes an important nuance to augment the previous approaches for [[petroclival junction]] PCJ and retrocarotid space
((Simal-Julián JA, Miranda-Lloret P, Botella-Asunción C, Kassam A. Full
endoscopic endonasal expanded approach to the petroclival region: optimizing the 
carotid-clival window. Acta Neurochir (Wien). 2014 Aug;156(8):1627-9. doi:
10.1007/s00701-014-2125-6. Epub 2014 May 23. Erratum in: Acta Neurochir (Wien).
2014 Oct;156(10):1927. Kassam, Armin [corrected to Kassam, Amin]. PubMed PMID:
24855022.
)).