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petroclival tumors

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https://www.readbyqxmd.com/read/28338439/stereotactic-radiosurgery-in-the-treatment-of-parasellar-meningiomas-long-term-volumetric-evaluation
#1
Or Cohen-Inbar, Athreya Tata, Shayan Moosa, Cheng-Chia Lee, Jason P Sheehan
OBJECTIVE Parasellar meningiomas tend to invade the suprasellar, cavernous sinus, and petroclival regions, encroaching on adjacent neurovascular structures. As such, they prove difficult to safely and completely resect. Stereotactic radiosurgery (SRS) has played a central role in the treatment of parasellar meningiomas. Evaluation of tumor control rates at this location using simplified single-dimension measurements may prove misleading. The authors report the influence of SRS treatment parameters and the timing and volumetric changes of benign WHO Grade I parasellar meningiomas after SRS on long-term outcome...
March 24, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28330424/tentorial-meningioma-supplied-by-a-marginal-tentorial-artery-arising-from-the-superior-cerebellar-artery-anatomic-and-technical-considerations
#2
Stéphanie Lenck, Kentaro Watanabe, Jean-Pierre Saint-Maurice, Moujahed Labidi, Marc-Antoine Labeyrie, Sébastien Froelich, Emmanuel Houdart
Background and importance The marginal tentorial artery runs over the free edge of the tentorium. Different origins have been described, always involving branches of the carotid artery. We report the superior cerebellar artery as an unknown origin of this artery. We developed our strategy in a case of a tentorial meningioma mainly supplied by this artery. Clinical presentation A 53-year-old man was admitted in our institution for the surgical treatment of a large tentorial and petroclival meningioma. A 2D conventional angiogram was insufficient to detect the tumoral blush...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28202836/-pre-and-intra-operative-supporting-technology-for-brain-tumors-4-transpetrosal-approach-for-petroclival-tumors
#3
Takeo Goto
No abstract text is available yet for this article.
February 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28124175/preoperative-simulation-of-the-running-course-of-the-abducens-nerve-in-a-large-petroclival-meningioma-a-case-report-and-literature-review
#4
Kaichuang Yang, Fusao Ikawa, Shumpei Onishi, Manish Kolakshyapati, Masaaki Takeda, Satoshi Yamaguchi, Minoru Ishifuro, Yuji Akiyama, Mizuki Morishige, Kaoru Kurisu
One of the most important and useful pieces of information in the preoperative evaluation of a large petroclival meningioma is the running course of the abducens nerve. The abducens nerve is small and has a long intracranial course, making it prone to compression by the tumor at various anatomical points. In relatively large tumors, it is difficult to confirm the entire course of the abducens nerve, even by heavy T2-thin slice imaging. We report a case of successful preoperative estimation of the course of the abducens nerve that aided in its complete preservation during the resection of a large petroclival tumor...
April 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28109858/radiologic-dilemma-in-an-extra-axial-petroclival-lesion-low-grade-versus-high-grade
#5
Madhivanan Karthigeyan, Chirag Kamal Ahuja, Debjyoti Chatterjee, Pravin Salunke
BACKGROUND: Radiologic differentiation between a low-grade and high-grade lesion is crucial when deciding extent of resection and prognostication. Occasionally, imaging features can be confusing between the 2 lesions. We report a case that presented such a radiologic dilemma. The lesion appeared benign and extra-axial on routine magnetic resonance imaging sequences. However, subtle clinical and imaging clues pointed to a high-grade lesion. CASE DESCRIPTION: A 27-year-old woman presented with multiple cranial nerve palsies, gait ataxia, and features of increased intracranial pressure...
April 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28042016/spontaneous-intraventricular-hemorrhage-a-rare-presentation-of-a-skull-base-mesenchymal-chondrosarcoma
#6
Altaf Ali Laghari, Gohar Javed, Muhammad Faheem Khan, Syed Ijlal Ahmed, Karim Rizwan Nathani, Riyasat Ahmed
BACKGROUND: Chondrosarcomas are very rare malignant, slow-growing tumors that develop in or near the petroclival region of the brain. We report a very rare case in which the tumor originated from left petrous bone and induced intraventricular hemorrhage leading to an acute comatose presentation. CASE DESCRIPTION: A 28-year-old man initially presented to the outpatient department with a 1-month history of headache, vomiting, vertigo, and left facial numbness. A lesion at the cerebellopontine angle with extension into the middle cranial fossa was demonstrated on computed tomography and magnetic resonance imaging...
March 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28035290/pathological-location-of-cranial-nerves-in-petroclival-lesions-how-to-avoid-their-injury-during-anterior-petrosal-approach
#7
Hamid Borghei-Razavi, Ryosuke Tomio, Seyed-Mohammad Fereshtehnejad, Shunsuke Shibao, Uta Schick, Masahiro Toda, Kazunari Yoshida, Takeshi Kawase
Objectives Numerous surgical approaches have been developed to access the petroclival region. The Kawase approach, through the middle fossa, is a well-described option for addressing cranial base lesions of the petroclival region. Our aim was to gather data about the variation of cranial nerve locations in diverse petroclival pathologies and clarify the most common pathologic variations confirmed during the anterior petrosal approach. Method A retrospective analysis was made of both videos and operative and histologic records of 40 petroclival tumors from January 2009 to September 2013 in which the Kawase approach was used...
February 2016: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/27965073/outcomes-of-endonasal-and-lateral-approaches-to-petroclival-meningiomas
#8
Maria Koutourousiou, Juan C Fernandez-Miranda, Francisco Vaz-Guimaraes Filho, John R de Almeida, Eric W Wang, Carl H Snyderman, Paul A Gardner
OBJECTIVE: Transpetrosal approaches for the treatment of petroclival meningiomas are often associated with substantial morbidity and long recovery. With the goal of early clinical improvement, we have used less invasive surgical approaches for petroclival meningiomas. METHODS: We retrospectively reviewed 32 patients with petroclival meningiomas. Eleven patients (34.4%) were managed with lateral approaches (retrosigmoid or far lateral approach), 17 (53.1%) with anterior midline approaches (endoscopic endonasal approach [EEA]), and 4 (12...
March 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27941420/the-natural-history-of-petroclival-meningiomas-a-volumetric-study
#9
Jacob B Hunter, Robert J Yawn, Ray Wang, Brendan P O'Connell, Matthew L Carlson, Akshitkumar Mistry, David S Haynes, Reid C Thompson, Kyle D Weaver, George B Wanna
OBJECTIVES: This study characterizes primary petroclival meningioma growth rates, before intervention, using volumetric analysis. In addition, predictors of growth are analyzed. METHODS: Patients with previously untreated petroclival meningiomas were retrospectively reviewed (1999-2015). Image analysis software was used to perform volumetric analyses of tumor size and growth. Three-dimensional segmentation volumetric analyses were compared with volumes estimated utilizing three orthogonal dimensions...
January 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/27935362/dramatic-radiographic-response-resulting-in-cerebrospinal-fluid-rhinorrhea-associated-with-sunitinib-therapy-in-recurrent-atypical-meningioma-case-report
#10
Amol Raheja, Howard Colman, Cheryl A Palmer, William T Couldwell
Sunitinib is a multiple tyrosine kinase inhibitor with antiangiogenic, cytostatic, and antimigratory activity for meningiomas. A recent clinical trial of sunitinib for treatment of recurrent Grade II and III meningiomas suggested potential efficacy in this population, but only 2 patients exhibited significant radiographic response with tumor volume reduction. The authors illustrate another such case and discuss a complication related to this dramatic tumor volume reduction in aggressive skull base meningiomas...
December 9, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27915104/petroclival-meningiomas-remaining-controversies-in-light-of-minimally-invasive-approaches
#11
REVIEW
Sâmia Yasin Wayhs, Guilherme Alves Lepski, Leonardo Frighetto, Gustavo Rassier Isolan
Surgical resection of petroclival meningiomas remains challenging due to their deep location and relationship to vital neurovascular structures. Although the natural history of these tumors involves a slow course, the incidence of cranial nerve deficits and the extent of tumor resection vary widely in the literature. Some reviews on this topic have been conducted, but data remain fragmentary and based on retrospective case series, which hinders attempts at meta-analysis. Within this context, research into the use of minimally invasive approaches, including in neuroendoscopy, continues to emerge...
January 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27787647/pediatric-intracranial-clear-cell-meningioma-a-clinicopathological-study-of-seven-cases-and-literature-review
#12
REVIEW
Hao Li, Meng Zhao, Yuming Jiao, Zhicen Li, Ji Ma, Shuo Wang, Yong Cao, Jizong Zhao
BACKGROUND: In this study, we reported seven cases of pediatric intracranial clear cell meningiomas (CCMs) in our institution and reviewed the relevant literature to investigate the clinicopathological characteristics, treatment options, and prognosis of these rare tumors. METHODS: From January 2005 to June 2016, we retrospectively reviewed seven pediatric intracranial CCMs in terms of their clinical data, preoperative MRI features, and prognosis. Moreover, a critical review of the English language literature was also conducted...
February 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27606016/computed-tomography-morphometric-analysis-of-the-central-clival-depression-and-petroclival-angle-for-application-of-the-presigmoid-approach-in-the-pediatric-population
#13
Sohum K Desai, Da'Marcus Baymon, Eric Sieloff, Kenneth Maynard, Marc Moisi, Achal P Patel, Joel T Patterson
AIMS: Lateral transtemporal approaches are useful for addressing lesions located ventral to the brainstem, especially when the pathologic diagnosis of the tumor dictates that a gross or near total resection improves outcomes. One approach, the presigmoid approach receives little attention in the pediatric population thus far. We sought to characterize morphometric changes, particularly the clival depth and the petroclival Cobb angle, that occur in the temporal bones of children and draw implications about doing a presigmoid approach in children...
April 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/27567583/true-petroclival-meningiomas-proposal-of-classification-and-role-of-the-combined-supra-infratentorial-presigmoid-retrolabyrinthine-approach
#14
Tanya E Sassun, Andrea G Ruggeri, Roberto Delfini
BACKGROUND: The evolution of Petroclival Meningiomas (PMs) surgical treatment has lead nowadays to a tendency to abandon complex petrous approaches and return to "less aggressive" skull base approaches. OBJECTIVE: To propose a PMs classification and establish the role of the Combined Supra-Infratentorial Presigmoid Retrolabyrinthine (CSIPR) approach in the treatment of PMs rigorously matching the anatomical definition. METHODS: A retrospective analysis was conducted of 51 cases of PMs strictly adhering to the anatomical definition, operated on from January 1990 to December 2011...
August 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27538163/-microsurgical-management-of-petroclival-meningiomas-combined-trans-subtemporal-and-suboccipital-retrosigmoid-keyhole-approach
#15
L H Chen, Y Yang, Q Wei, Y J Li, W D Li, J B Gao, B Yu, H Zhao, R X Xu
OBJECTIVE: With the development of modern skull base minimally invasive technology mature and neural radio surgery techniques, it is necessary to re-examine the therapeutic strategy for the treatment of petroclival meningiomas. To sum up the operative experience and methods in microsurgical resection of petroclival meningiomas by the combining trans-subtemporal and suboccipital retrosigmoid keyhole approach. To explore the minimally invasive operation approach of petroclival meningiomas, to raise the removal degree and to improve the postoperative result using this approach...
February 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27433420/endoscopic-endonasal-approach-for-transclival-resection-of-a-petroclival-meningioma-a-technical-note
#16
Walter C Jean, Daniel R Felbaum, Amjad Anaizi, Timothy R DeKlotz
The endoscopic endonasal transclival approach has been widely described for its use to resect clivus chordomas, but there have only been isolated reports of its use for petroclival meningiomas. These tumors are most often resected utilizing open transpetrosal approaches, but these operations, difficult even in the hands of dedicated skull base surgeons, are particularly challenging if the meningiomas are medially-situated and positioned mainly behind the clivus. For this subset of petroclival meningiomas, a transclival approach may be preferable...
2016: Curēus
https://www.readbyqxmd.com/read/27399499/220%C3%A2-expanded-anterior-petrosectomy-through-the-transcranial-middle-fossa-and-extended-endoscopic-transphenoidal-transclival-approaches-qualitative-and-quantitative-anatomic-analysis
#17
Aurel Hasanbelliu, Norberto O Andaluz, Alberto Di Somma, Jeffrey T Keller, Lee Zimmer, Myles L Pensak, Ravi Samy, Mario Zuccarello
INTRODUCTION: Petroclival tumors and ventrolateral lesions of the pons present a unique surgical challenge. We aimed to provide qualitative and quantitative anatomic analyses of anterior petrous apicectomy through the transcranial middle fossa (TMF) and the extended endoscopic transphenoidal-transclival (EETT) approaches. METHODS: Ten cadaveric silicon-injected cadaver heads were used for this study. The petrous apex and the clivus were drilled extradurally through both middle fossa and endonasal approaches...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27373363/-the-application-and-mechanism-analysis-of-postoperative-intracranial-pressure-monitoring-in-giant-meningioma-clinical-analysis-of-7-cases
#18
G Chen, W W Zhai, Z Q Yu
OBJECTIVE: To investigate varying patterns of intracranial pressure(ICP)after giant meningioma resection and analyze the causes of the variation of ICP in different postoperative phases. METHODS: Clinical data, surgical approachs and the ICP monitoring data of 7 patients with giant meningioma in different positions who were admitted to the First Affiliated Hospital of Soochow University from October 2013 to July 2014 and received microsurgical resection via different approachs were analysed retrospectively...
June 28, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27337239/results-with-expanded-endonasal-resection-of-skull-base-meningiomas-technical-nuances-and-approach-selection-based-on-an-early-experience
#19
Caroline Hayhurst, Michael E Sughrue, Pankaj A Gore, Phillip A Bonney, Joshua D Burks, Charles Teo
AIM: Reconstruction technique advances have created renewed enthusiasm for the expanded endonasal approach (EEA). However, as with any new technique, early experiences inevitably lead to more selective use of these techniques. We reviewed our experience of the expanded endonasal endoscopic approach for skull base meningiomas and place it in context of the literature. MATERIAL AND METHODS: We performed retrospective review of all endonasal cases performed at our center for histologically proven meningioma...
2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27319315/intraoperative-magnetic-resonance-imaging-in-skull-base-surgery-a-review-of-71%C3%A2-consecutive-cases
#20
Ramsey Ashour, Stephen Reintjes, Michael S Park, Sananthan Sivakanthan, Harry van Loveren, Siviero Agazzi
BACKGROUND: Although intraoperative magnetic resonance imaging (iMRI) increasingly is used during glioma resection, its role in skull base surgery has not been well documented. In this study, we evaluate our experience with iMRI for skull base surgery. METHODS: Medical records were reviewed retrospectively on all neurosurgical cases performed at our institution in the IMRIS iMRI suite between April 2014 and July 2015. RESULTS: During the study period, the iMRI suite was used for 71 skull base tumors...
September 2016: World Neurosurgery
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