====== Retrosigmoid approach for cerebellopontine angle meningioma ====== {{rss>https://pubmed.ncbi.nlm.nih.gov/rss/search/1XOaWYYtYW3Oy6rIYUqG07J6mFfOO6GrlObAHU4KtR2QnmPc7N/?limit=15&utm_campaign=pubmed-2&fc=20240220064700}} ---- ---- [[Retrosigmoid approach]] for [[cerebellopontine angle meningioma]] is a safe surgical procedure. The modern management of CPA meningiomas should achieve as complete a resection as possible within reasonable limits, considering that a small residual tumor can be controlled fairly easily with [[radiosurgery]] for a relatively long time ((Baroncini M, Thines L, Reyns N, Schapira S, Vincent C, Lejeune JP. Retrosigmoid approach for meningiomas of the cerebellopontine angle: results of surgery and place of additional treatments. Acta Neurochir (Wien). 2011 Oct;153(10):1931-40; discussion 1940. doi: 10.1007/s00701-011-1090-6. Epub 2011 Jul 29. PubMed PMID: 21800106. )). ====Key points==== Careful examination of preoperative studies is needed to identify anatomical peculiarities. Patient positioning: the head must be gently flexed and its vertex gently tilted toward the floor. Neurophysiologic monitoring and intraoperative navigation. Craniectomy: partial exposure of the transverse and sigmoid sinuses. Curvilinear dural incision reflected laterally to minimize the risk of sinus injury. Opening the cerebellomedullary cistern for CSF drainage and cerebellar relaxation. ====Videos==== Resection of a CP Angle Meningioma with Flexible CO2 Laser Fiber ====Fully endoscopic resection of cerebellopontine angle meningioma==== see [[Fully endoscopic resection of cerebellopontine angle meningioma]]. ===== Postoperative facial nerve paralysis following a retrosigmoid approach for cerebellopontine angle meningioma surgery ===== [[Postoperative facial nerve paralysis following a retrosigmoid approach for cerebellopontine angle meningioma surgery]]