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Skull Base

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By Felipe Constanzo M.D.
E P Lin, B T Crane
Vestibular schwannomas are the most common cerebellopontine angle tumor. During the past century, the management goals of vestibular schwannomas have shifted from total resection to functional preservation. Current treatment options include surgical resection, stereotactic radiosurgery, and observation. Imaging has become a crucial part of the initial screening, evaluation, and follow-up assessment of vestibular schwannomas. Recognizing and understanding the management objectives, various treatment modalities, expected posttreatment findings, and complications allows the radiologist to play an essential role in a multidisciplinary team by providing key findings relevant to treatment planning and outcome assessment...
November 2017: AJNR. American Journal of Neuroradiology
Nathan T Zwagerman, Georgios Zenonos, Stefan Lieber, Wei-Hsin Wang, Eric W Wang, Juan C Fernandez-Miranda, Carl H Snyderman, Paul A Gardner
The endoscopic endonasal approach (EEA) has significantly evolved since its initial uses in pituitary and sinonasal surgery. The literature is filled with reports and case series demonstrating efficacy and advantages for the entire ventral skull base. With competence in 'minimally invasive' parasellar approaches, larger and more complex approaches were developed to utilize the endonasal corridor to create maximally invasive endoscopic skull base procedures. The challenges of these more complex endoscopic procedures include a long learning curve and navigating in a narrow corridor; reconstruction of defects presented new challenges and early experience revealed a significantly higher risk of cerebrospinal fluid leak...
November 2016: Journal of Neuro-oncology
Anil Nanda, Jai Deep Thakur, Ashish Sonig, Symeon Missios
OBJECTIVE Cavernous sinus meningiomas (CSMs) represent a cohort of challenging skull base tumors. Proper management requires achieving a balance between optimal resection, restoration of cranial nerve (CN) function, and maintaining or improving quality of life. The objective of this study was to assess the pre-, intra-, and postoperative factors related to clinical and neurological outcomes, morbidity, mortality, and tumor control in patients with CSM. METHODS A retrospective review of a single surgeon's experience with microsurgical removal of CSM in 65 patients between January 1996 and August 2013 was done...
August 2016: Journal of Neurosurgery
Marco A Mascarella, Marc A Tewfik, Majed Aldosari, Denis Sirhan, Anthony Zeitouni, Salvatore Di Maio
OBJECTIVE: To identify clinico-radiologic factors associated with incomplete anterior cranial fossa (ACF) meningioma resection via an endoscopic endonasal approach. METHOD: Patients undergoing endoscopic endonasal resection of an ACF meningioma were retrospectively accrued from two university-affiliated centers. Demographic profiles and radiologic findings, including tumor dimensions and morphology, anatomic location, and vascular involvement, were stratified according to the extent of resection...
July 2016: World Neurosurgery
Paolo Battaglia, Mario Turri-Zanoni, Paolo Castelnuovo, Daniel M Prevedello, Ricardo L Carrau
BACKGROUND: Endoscopic endonasal approaches, when appropriate, allow a less invasive method to remove anterior skull base cancer than traditional external transfacial/craniofacial approaches. The resultant skull base defect can be significantly large, potentially extending from the posterior table of the frontal sinus to the tuberculum sellae in the sagittal plane, and from one lamina papyracea to the other in the coronal plane. However, frontal lobe herniation after such expanded endoscopic resection has been considered more of a theoretical than a practical occurrence...
September 2015: Neurosurgery
Masahiro Shin, Kenji Kondo, Shunya Hanakita, Hirotaka Hasegawa, Masanori Yoshino, Yu Teranishi, Taichi Kin, Nobuhito Saito
OBJECTIVE Reports about endoscopic endonasal surgery for skull base tumors involving the lateral part of petrous apex remain scarce. The authors present their experience with the endoscopic transsphenoidal anterior petrosal (ETAP) approach through the retrocarotid space for tumors involving the internal auditory canal, jugular fossa, and cavernous sinus. METHODS The authors performed the ETAP approach in 10 patients with 11 tumors (bilateral in 1 patient) that extensively occupied the lateral part of petrous apex, e...
January 2017: Journal of Neurosurgery
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