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Objective: To evaluate specificity and sensibility of standard MRI, High-Resolution orbit MRI (HI-MRI) and clinical examination in assessing meningioma growth inside the optic canal, compared to the intraoperative findings. Method: We assessed 151 patients with parasellar meningiomas operated on [for full text, please go to the a.m. URL], 66. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: The aim of this study was to evaluate the functional outcome after microsurgery for previously treated vestibular schwannomas (VS), either through surgery or irradiation. Methods: The authors performed a retrospective study of 21 patients presented with recurrent and /or previously[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: The application of antiepileptic drugs is not effective in the prevention of initial seizures in meningioma patients. Hence, the routine application of antiepileptic drugs in newly diagnosed meningioma is not recommended. Up to date, the risk factors to develop a seizure have not been thoroughly[for full text, please go to the a.m. URL], 65. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Since the retrosigmoid intradural suprameatal approach (RISA) was introduced into the neurosurgical context for resection of petroclival meningiomas, various reports published so far have focused on the anatomical advantages and disadvantages of this technique in comparison with others that[for full text, please go to the a.m. URL], 65. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Meningiomas are primarily benign and slow-growing tumours. There are only few stable meningioma cell lines. Therefore primary cell cultures are often used for meningioma research in vitro. But those primary cell cultures change their initial phenotype within few passages and then go into [for full text, please go to the a.m. URL], 65. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: To describe the retrosigmoid and the Restrosigmoid Intradural Suprameatal Approach (180° reverse Kawase’s Approach) and ist clinical outcome in patients with petrous apex and petroclival mengiomas. Method: Between March 2005 and November 2013, 29 patients with Petrous Apex [for full text, please go to the a.m. URL], 65. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: CD133 is a five transmembrane domain glycoprotein, which is widely used for selection of brain tumor stem cells, although the biological function of CD133 is not well understood. CD133 expression in brain tumor tissue is correlated with poor prognosis. Furthermore, the higher expression of[for full text, please go to the a.m. URL], 64. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)

Objective: Even though clinical and morphological differences of vestibular schwannomas are well documented, the knowledge on molecular mechanisms of development is sparse. In this study, we examined differences in gene expression between tumor and control tissue in search of underlying disease-causing[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: Minimal invasive dorsal foraminotomy for lateral cervical disc disease is an established surgical technique with preservation of the motion segment. Methods: 71 patients (2006 to 2010) were operated on by a monosegmental minimal invasive dorsal foraminotomy due to lateral or intraforaminal[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: The aim of this study was to evaluate the functional outcome after microsurgical treatment for vestibular schwannomas (VS). Methods: The authors performed a retrospective study of 269 consecutive patients presenting with VS who underwent surgical treatment between March 2004 and October[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: Metastatic seeding or iatrogenic implantation of vestibular schwannoma is a very rare phenomenon. There is only one published case in the literature so far. The authors present two cases of patients with previously resected vestibular schwannoma and the occurrence of new tumors with similar[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: To report about endoscope-assisted surgery of large skull based epidermoid cysts focusing on the application of neuro-endoscopy and the clinical outcome in cases of epidermoid cysts. Methods: Twenty-seven consecutively operated patients (2005–2011) with an epidermoid cyst of the[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: Silent periods (SP's) in the neurophysiological assessment of Syringomyelia have been introduced with satisfactory results, giving early confirmation of disrupted spinothalamic fibers that convey pain and sensation. However the ability of the SP's to recover after resolution of [for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: Traumatic cervical instabilities in the paediatric age group frequently represent a challenge for the spine surgeon, as standard instrumentation techniques are not developed for the biomechanical needs in this patient group. Methods: Since 2008, fourteen pediatric patients were treated[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: Vestibular schwannomas (VS) are classified according to their extension in the cerebello-pontine angle as well as to their intra-and extrameatal expansion. A subgroup of these tumours appears with a cystic component. Our objective is to provide a classification incorporating the cystic nature[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: Vestibular schwannomas, also known as acoustic neuromas, are benign tumors of the vestibular part of the eighth cranial nerve, the vestibulocochlear nerve. 95% of the cases are sporadic, non-familiar and unilateral. In 5% of the cases they are bilateral and caused by the autosomal[for full text, please go to the a.m. URL], 62. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgen (PNCH)

Objective: In meningiomas quantitative real-time reverse transcription-polymerase chain reaction (qPCR) is most frequently used for the accurate determination of gene expression using various reference genes. Although meningiomas are a heterogenous group of tissues, no data have been reported to validate[for full text, please go to the a.m. URL], 62. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgen (PNCH)