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trigeminal schwannoma

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https://www.readbyqxmd.com/read/28203025/-trigemino-cardiac-reflex-in-skull-base-surgery
#1
H Z Duan, Y Zhang, L Li, J Y Zhang, Z Q Yi, S D Bao
OBJECTIVE: To explore the mechanism, clinical features, and prognosis of Trigemino-cardiac reflex (TCR) during skull base operations. METHODS: A retrospective analysis was performed on 291 patients with skull base disease from Jan. 2009 to Oct. 2015 in Peking University First Hospital. By reviewing the patients' operative data and anaesthetic electrical record, and we picked out all the patients who suffered from TCR during the operation and analyzed their surgical procedures, clinical features, influence factors, and prognosis...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28195750/dosimetric-analysis-of-neural-and-vascular-structures-in-skull-base-tumors-treated-with-stereotactic-radiosurgery
#2
Yarah M Haidar, Jay M Bhatt, Yaser Ghavami, Omid Moshtaghi, Amanda Schwer, Stafford Chenery, Hamid R Djalilian
Objective To examine the relationship between the prescribed target dose and the dose to healthy neurovascular structures in patients with vestibular schwannomas treated with stereotactic radiosurgery (SRS). Study Design Case series with chart review. Setting SRS center from 2011 to 2013. Subjects Twenty patients with vestibular schwannomas treated at the center from 2011 to 2013. Methods Twenty patients with vestibular schwannomas were included. The average radiation dose delivered to healthy neurovascular structures (eg, carotid artery, basilar artery, facial nerve, trigeminal nerve, and cochlea) was analyzed...
February 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28134648/symptomatic-trigeminal-neuralgia-caused-by-cerebellopontine-angle-tumors
#3
Pengfei Liu, Chenlong Liao, Wenxiang Zhong, Min Yang, Shiting Li, Wenchuan Zhang
To investigate the characteristics of symptomatic trigeminal neuralgia (TN) caused by tumors and the relationship between anatomicosurgical findings and tumor type, the authors undertook a retrospective review of 35 patients with symptomatic TN between 2006 and 2015. The tumors included 16 meningiomas, 14 epidermoids, 4 vestibular schwannomas, and 1 hemangioblastoma. The studies show that patients with tumor-induced TN were significantly younger than those idiopathic TN (P <0.05). Meningioma-induced TN tended to have responsible vessels, while epidermoid tumor seemed to cause TN by wrapping or compressing the nerve...
January 27, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28128697/gamma-knife-radiosurgery-for-treatment-of-growing-vestibular-schwannomas-in-patients-with-neurofibromatosis-type-2-a-matched-cohort-study-with-sporadic-vestibular-schwannomas
#4
Ivo J Kruyt, Jeroen B Verheul, Patrick E J Hanssens, Henricus P M Kunst
OBJECTIVE Neurofibromatosis Type 2 (NF2) is a tumor syndrome characterized by an autosomal dominant pattern of inheritance. The hallmark of NF2 is the development of bilateral vestibular schwannomas (VSs), generally by 30 years of age. One of the first-line treatment options for small to medium-large VSs is radiosurgery. Although radiosurgery shows excellent results in sporadic VS, its use in NF2-related VS is still a topic of dispute. The aim of this study was to evaluate long-term tumor control, hearing preservation rates, and factors influencing outcome of optimally dosed, contemporary Gamma Knife radiosurgery (GKRS) for growing VSs in patients with NF2 and compare the findings to data obtained in patients with sporadic VS also treated by means of GKRS...
January 27, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28089525/radiotherapeutic-management-of-vestibular-schwannomas-using-size-and-location-adapted-fractionation-regimens-to-maximize-the-therapeutic-ratio
#5
Benjamin G Slane, Uma Goyal, Joel L Grow, Christopher Morrison, Craig R Hullet, John Gordon, Abhay Sanan, Baldassarre Stea
BACKGROUND: We evaluated and compared the radiographic and clinical outcomes of patients with vestibular schwannomas treated with single fraction stereotactic radiosurgery (SRS), 5 fractions of hypofractionated stereotactic radiation therapy (hSRT), or 25 to 30 fractions of conventionally fractionated stereotactic radiation therapy (cfSRT). METHODS AND MATERIALS: Fifty-six patients treated with LINAC-based SRS (median, 12.5 Gy), hSRT (25 Gy), or cfSRT (median, 54 Gy) were retrospectively reviewed...
October 28, 2016: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28043642/-maxillary-trigeminal-schwannoma-presentation-of-a-case-and-review-of-literature
#6
Alejandro Jacob Madrid-Sánchez, Carlos Castillo-Rangel, Myriam Leticia Contreras-Ayala, Edgardo Ruiz-García, Ana Karen Castillo-Castro, Ricardo Ramírez-Aguilar
INTRODUCTION: Schwannomas are benign tumours that are relatively common in the head, however the involvement of the sinunasal region is rare and there are only 5 cases reported in the maxilla in current literature, representing less than 1% of bone tumours. CLINICAL CASE: We report the case of a woman with a right maxillary schwannoma who underwent a complete resection of the lesion. Emphasis is placed on the rarity of the lesion in terms of its location and includes a review of clinical behaviour, diagnosis and current treatment options...
December 30, 2016: Cirugia y Cirujanos
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/27803960/fractionated-vs-single-fraction-stereotactic-radiotherapy-in-patients-with-vestibular-schwannoma-hearing-preservation-and-patients-self-reported-outcome-based-on-an-established-questionnaire
#8
Kerstin A Kessel, Hanna Fischer, Marco M E Vogel, Markus Oechsner, Henning Bier, Bernhard Meyer, Stephanie E Combs
BACKGROUND: Stereotactic radiotherapy (RT) has been established as a valid treatment alternative in patients with vestibular schwannoma (VS). There is ongoing controversy regarding the optimal fractionation. Hearing preservation may be the primary goal for patients with VS, followed by maintenance of quality of life (QoL). METHODS: From 2002 to 2015, 184 patients with VS were treated with radiosurgery (RS) or fractionated stereotactic radiotherapy (FSRT). A survey on current symptoms and QoL was conducted between February and June 2016...
November 1, 2016: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/27803834/surgical-approach-to-the-cavernous-sinus-for-a-trigeminal-schwannoma-resection-technical-note-and-case-report
#9
Riccardo Caruso, Alessandro Pesce, Venceslao Wierzbicki, Luigi Marrocco, Emanuele Piccione
We report a rare case of schwannoma of the lateral wall of the cavernous sinus, an exceedingly rare lesion affecting this anatomical district, and discuss salient aspects of the surgical approach to the cavernous sinus, which are traditionally considered technically challenging due to the high risk of postoperative morbidity and mortality related to the presence of the cranial nerves and internal carotid artery.
2016: Case Reports in Surgery
https://www.readbyqxmd.com/read/27777157/gamma-knife-radiosurgery-for-residual-and-recurrent-vestibular-schwannomas-after-previous-surgery-clinical-results-in-a-series-of-90-patients-and-review-of-the-literature
#10
Michele Bailo, Nicola Boari, Filippo Gagliardi, Alberto Franzin, Martina Piloni, Alfio Spina, Marco Gemma, Antonella Del Vecchio, Angelo Bolognesi, Pietro Mortini
OBJECT: Complete vestibular schwannomas (VS) removal is not always achievable without any risk of disabling postoperative complications, especially in terms of facial nerve function. Moreover, even after gross total removal a relevant rate of recurrence has been reported. The aim of this study is to validate Gamma Knife radiosurgery (GKRS) as an effective strategy to treat tumor's regrowth after previous surgery. METHODS: Ninety patients treated with GKRS for VS after previous microsurgery were included in the present study...
October 21, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27738538/neurofibromatosis-type-2-presenting-with-oculomotor-ophthalmoplegia-and-distal-myopathy
#11
Jessica Mani Penny Tevaraj, Evelyn Tai Li Min, Raja Azmi Mohd Noor, Azhany Yaakub, Wan Hazabbah Wan Hitam
Neurofibromatosis type 2 usually presents with bilateral acoustic schwannomas. We highlight the rare presentation of neurofibromatosis initially involving third nerve. A 23-year-old Malay female presented with left eye drooping of the upper lid and limitation of upward movement for 8 years. It was associated with right-sided body weakness, change in voice, and hearing disturbance in the right ear for the past 2 years. On examination, there was mild ptosis and limitation of movement superiorly in the left eye...
2016: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/27723656/jaw-immobilization-for-gamma-knife-surgery-in-patients-with-mandibular-lesions-a-newly-innovative-approach
#12
Constantin Tuleasca, Martin Broome, Pascal J Mosimann, Luis Schiappacasse, Michele Zeverino, Antoine Dorenlot, Jérôme Champoudry, Jean Régis, Marc Levivier
BACKGROUND: The purpose of our report is to describe an innovative system used for mandibular immobilization during Gamma Knife surgery (GKS) procedures. It is based on an approach originally developed in Marseille in extracranial lesions, close to or involving the mandible, which may imply a certain degree of movement during the therapeutic image acquisitions and/or GKS treatment. METHODS: The maxillofacial surgeon applied bone titanium self-tapping monocortical screws (4; 2 mm diameter, 10 mm length) between roots of the teeth in the fixed gingiva (upper and lower maxillae) the day before GKS (local anesthesia, 5-10 min time)...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27702706/radiosurgery-for-secondary-trigeminal-neuralgia-revisiting-the-treatment-paradigm
#13
Srinivas Chivukula, Won Kim, Xiaoyi Zhuo, Stephen Tenn, Tania Kaprealian, Antonio DeSalles, Nader Pouratian
BACKGROUND: The mechanisms by which surgery and radiation elicit pain relief in trigeminal neuralgia (TN) secondary to mass lesions vary widely. We aimed to evaluate the outcomes of radiation to the nerve rather than to the lesion in the treatment of secondary TN. METHODS: We retrospectively reviewed all patients who underwent radiation at the University of California, Los Angeles for TN secondary to tumors. The Barrow Neurological Institute (BNI) pain score was used to evaluate pain outcomes...
October 1, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27695572/solid-cystic-trigeminal-schwannoma-with-intraorbital-extension-causing-proptosis-and-vision-loss
#14
Pankaj Gupta, Arvind Sharma, Jitendra Singh
Schwannomas are slowly growing, well capsulated, benign tumors. Involvement of vestibular nerve is most commonly followed by trigeminal nerve. Trigeminal schwannoma is rare entity, and cystic degeneration with intraorbital extension of trigeminal schwannoma is even rarer. These tumors occur in fourth and fifth decades of life and patients have variable presentation depending on which cranial compartment is involved. Orbital schwannoma usually presents with proptosis with or without vision loss. We are reporting such a rare case of solid cystic trigeminal schwannoma with intraorbital extension through superior orbital fissure that was removed surgically...
October 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27667574/intracranial-angiomatoid-fibrous-histiocytoma-a-case-report-and-literature-review
#15
Mohammed A Alshareef, Zayed Almadidy, Tiffany Baker, Arie Perry, Cynthia T Welsh, William A Vandergrift
BACKGROUND: Angiomatoid fibrous histiocytoma (AFH) is a rare and low-grade soft tissue lesion that typically arises from subcutaneous and deep dermal tissue of extremities. The first case was reported in 1979 by Enzinger, and since has become known as a distinct entity. AFH has been increasingly reported in different organ systems, with rare reports of primary intracranial AFH. To date there have been 3 reports of intracranial AFH and one report of metastasis to the brain, most of which were in young adults...
September 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27613496/intrasellar-and-suprasellar-schwannoma-misdiagnosed-as-pituitary-macroadenoma-a%C3%A2-case-report-and-review-of-the-literature
#16
Jinsen Zhang, Shugang Xu, Qinglin Liu, Xueen Li, Deze Jia, Gang Li
BACKGROUND: Intracranial schwannomas usually arise from sensory nerves with a predilection for the trigeminal nerve and the vestibular component of the eighth cranial nerve (VIII). Schwannoma arising in the sella and extending into the suprasellar region is exceedingly rare and easily misdiagnosed as pituitary macroadenoma. Only 26 cases of intrasellar schwannomas have been reported in the literature. CASE DESCRIPTION: A patient with an intrasellar schwannoma and suprasellar extension was presurgically diagnosed as having pituitary macroadenoma...
September 6, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27535636/gamma-knife-radiosurgery-as-primary-treatment-for-large-vestibular-schwannomas-clinical-results-at-long-term-follow-up-in-a-series-of-59-patients
#17
Michele Bailo, Nicola Boari, Alberto Franzin, Filippo Gagliardi, Alfio Spina, Antonella Del Vecchio, Marco Gemma, Angelo Bolognesi, Pietro Mortini
BACKGROUND: Gamma Knife radiosurgery (GKRS) represents a well-accepted treatment for small-medium vestibular schwannomas (VS); however, its application in larger VS is still controversial. METHODS: Among the 523 patients treated at our institution for VS between 2001 and 2010, we included 59 patients with a VS larger than 25 mm, treated by GKRS as primary treatment, not affected by neurofibromatosis type 2, and with a clinical follow-up of at least 36 months. Five patients underwent ventriculoperitoneal shunt placement before radiosurgery...
November 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27527622/long-term-results-of-gamma-knife-stereotactic-radiosurgery-for-vestibular-schwannomas-in-patients-with-type-2-neurofibromatosis
#18
G Spatola, R Carron, C Delsanti, J-M Thomassin, P-H Roche, J Régis
INTRODUCTION: The aim of this study was to analyze the long-term results of Gamma-knife radiosurgery treatment of vestibular schwannomas in type 2 neurofibromatosis patients. MATERIALS AND METHODS: A cohort of 129 treatments for vestibular schwannomas in 103 patients was selected from a prospectively-maintained clinical database. Tumor control was assessed by volumetric analysis of the tumor at the last follow-up. Any need of a further procedure such as microsurgical removal or second treatment was regarded as a failure of tumor control...
August 12, 2016: Neuro-Chirurgie
https://www.readbyqxmd.com/read/27515152/clinically-significant-intratumoral-hemorrhage-in-patients-with-vestibular-schwannoma
#19
Matthew L Carlson, Nicole M Tombers, Colin L W Driscoll, Jamie J Van Gompel, John I Lane, Aditya Raghunathan, Kelly D Flemming, Michael J Link
OBJECTIVES: The frequency of intratumoral hemorrhage (ITH) in vestibular schwannoma (VS) remains undefined. METHODS: Retrospective case series of all patients diagnosed with hemorrhagic VS between 2003 and 2015 at a single tertiary academic skull base center. RESULTS: Five patients with ITH were evaluated, representing 0.4% of all newly diagnosed VS evaluated at the authors' center during this time. The median age at time of diagnosis was 66 years (range 39-83), four of five cases occurred in men, and all had sporadic unilateral tumors...
August 12, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27513938/outcomes-in-patients-with-vestibular-schwannoma-after-subtotal-resection-and-adjuvant-radiosurgery
#20
Hesham Radwan, Mark Bruce Eisenberg, Jonathan Petrus Sandberg Knisely, Maged Mofied Ghaly, Michael Schulder
BACKGROUND: The debate continues with a limited number of publications describing outcomes in patients with vestibular schwannoma (VS) treated with planned subtotal resection (STR) plus stereotactic radiosurgery (SRS). Here we present our experience. METHODS: This is a retrospective review of 22 patients with VS Koos grade III and IV who were treated with STR followed by SRS. Tumor volumes, facial nerve function, hearing preservation, and the presence of trigeminal neuropathy were noted...
2016: Stereotactic and Functional Neurosurgery
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