1,974 results match your criteria Imaging in Cranial Nerve Schwannoma


Short-Term Surgical Outcome for Vestibular Schwannoma in Sweden: A Nation-Wide Registry Study.

Front Neurol 2019 29;10:43. Epub 2019 Jan 29.

Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden.

Vestibular Schwannoma (VS) is a benign neoplasm arising from the 8th cranial nerve, with surgery one of the treatment modalities. In a nation-wide registry study, we describe the baseline, treatment characteristics, and short-term outcome in patients surgically treated for VS. We performed a nationwide study with data from the Swedish Brain Tumor Registry (SBTR) for all adults diagnosed with VS 2009-2015. Read More

View Article

Download full-text PDF

Source
https://www.frontiersin.org/article/10.3389/fneur.2019.00043
Publisher Site
http://dx.doi.org/10.3389/fneur.2019.00043DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6361837PMC
January 2019
1 Read

Abducens nerve schwannoma: a case report and literature review.

World Neurosurg 2019 Feb 1. Epub 2019 Feb 1.

Department of Neurosurgery, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Kyushu Medical Center, 1-8-1, Jigyo-hama, Chuo-ku, Fukuoka 810-8563, Japan.

Background: Abducens nerve function seldom shows complete recovery after removal of abducens nerve schwannoma. No cases with unclear course of the abducens nerve during surgery have been reported to achieve complete recovery of nerve function.

Case Description: We report the case of a 44-year-old woman who presented with occasional dysgeusia without abducens nerve paresis. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2019.01.123DOI Listing
February 2019

Preoperative prediction of facial nerve in patients with Vestibular Schwannomas: the role of diffusion tensor imaging. A systematic review.

World Neurosurg 2019 Jan 29. Epub 2019 Jan 29.

Academic Neurosurgery, Department of Neurosciences, University of Padova Medical School, via Giustiniani 5, 35128 Padova, Italy.

In vestibular schwannoma surgery the preservation of facial and cochlear nerves is of paramount concern with regard to their impact on the quality of life. The rate of nerve function preservation raised on account of advancement in surgical technique and neuroimaging and as well as the introduction of intraoperative neuromonitoring. Preoperative depiction of anatomical concerns between nerves and tumour could help the surgical planning; indeed many studies investigating advanced imaging for cranial nerves detection, in particular diffusion tensor imaging, have been published from the last decade. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2019.01.099DOI Listing
January 2019

Pediatric intracranial lower cranial nerve schwannoma unassociated with neurofibromatosis type 2: case report and review of the literature.

Childs Nerv Syst 2019 Jan 13. Epub 2019 Jan 13.

Division of Neurosurgery, National Center for Child Health and Development, Okura 2-10-1, Setagaya-ku, Tokyo, 157-8535, Japan.

Introduction: Pediatric schwannomas are rare, and most of them are associated with neurofibromatosis type 2 (NF2) and usually located in the vestibular nerve. Herein, we present the first pediatric case of intracranial schwannoma derived from the IX/X nerve complex unrelated to NF2.

Case Report: The patient was a 9-year-old boy who presented with a 3-month history of headache and nausea. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00381-018-04045-4DOI Listing
January 2019
2 Reads

Skull base angiomatous leiomyoma: a case report and review of literature.

Br J Neurosurg 2019 Jan 12:1-3. Epub 2019 Jan 12.

b Department of Neurosurgery , Royal Hallamshire Hospital , Sheffield , UK.

Leiomyomas, benign neoplasms of mesenchymal origin, are common in gastrointestinal and genitourinary tracts. They are comprised of well-differentiated smooth muscle cells with few mitotic figures. Leiomyomas should not exhibit metastatic potential, though metastasis has been reported. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1080/02688697.2018.1555636DOI Listing
January 2019
4 Reads

Case Report and Review of the Literature of Schwannomas that Originate from the Falx Cerebri.

World Neurosurg 2019 Jan 3. Epub 2019 Jan 3.

Departments of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka, Japan.

Background: Schwannomas not related to cranial nerves are very rare. Here, we present a case of a schwannoma that originated from the falx cerebri and review reported cases in the literature.

Case Description: A 36-year-old male experienced generalized seizures following right hemiparesis predominantly in his lower extremity. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.12.122DOI Listing
January 2019

Three-dimensional imaging of the human internal acoustic canal and arachnoid cistern: a synchrotron study with clinical implications.

J Anat 2019 Mar 18;234(3):316-326. Epub 2018 Dec 18.

Department of Surgical Sciences, Section of Otolaryngology, Uppsala University Hospital, Uppsala, Sweden.

A thorough knowledge of the gross and micro-anatomy of the human internal acoustic canal (IAC) is essential in vestibular schwannoma removal, cochlear implantation (CI) surgery, vestibular nerve section, and decompression procedures. Here, we analyzed the acoustic-facial cistern of the human IAC, including nerves and anastomoses using synchrotron phase contrast imaging (SR-PCI). A total of 26 fresh human temporal bones underwent SR-PCI. Read More

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1111/joa.12926
Publisher Site
http://dx.doi.org/10.1111/joa.12926DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365480PMC
March 2019
4 Reads

Microsurgical Gross Total Resection of a WHO Grade II Cerebellopontine Angle Ependymoma in an Adult.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S426-S427. Epub 2018 Sep 25.

Department of Neurological Surgery, University of Wisconsin Medical School, Madison, Wisconsin, United States.

Infratentorial ependymomas that arise in the fourth ventricle and extend into the cerebellopontine angle (CPA) through the foramina of Luschka are well described. However, a primary CPA location of an ependymoma is distinctly uncommon. In this video, we present a 46-year-old man with episodes of dizziness, left-sided tinnitus, imbalance, double vision, and nausea. Read More

View Article

Download full-text PDF

Source
http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669969
Publisher Site
http://dx.doi.org/10.1055/s-0038-1669969DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6243230PMC
December 2018
10 Reads

Management of Vestibular Schwannomas for the Radiologist.

Neuroimaging Clin N Am 2019 Feb 31;29(1):173-182. Epub 2018 Oct 31.

Otolaryngology-Head and Neck Surgery, Vagelos College of Physicians & Surgeons, NewYork-Presbyterian/Columbia University Irving Medical Center, 180 Fort Washington Avenue, New York, NY 10032, USA. Electronic address:

Vestibular schwannomas are the most common tumor of the cerebellopontine angle. The history of their management has driven advances in imaging, lateral skull base surgery, as well as radiosurgery. With these advances, a shift has occurred from life-saving treatment for late-stage disease to quality of life focused management of smaller tumors. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.nic.2018.09.003DOI Listing
February 2019
10 Reads

Presigmoid Approach to Dumbbell Trigeminal Schwannoma.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S391-S392. Epub 2018 Sep 25.

Department of Neurosurgery, University of Colorado Hospital, Aurora, Colorado, United States.

This case is a 15-year-old male, presenting with headaches, right face, and arm numbness, and ataxia. MRI (magnetic resonance imaging) revealed a large right sided dumbbell shaped lesion, extending into the middle and posterior fossa with compression of the brainstem consistent with a trigeminal schwannoma. Treatment options here would be a retrosigmoid suprameatal approach or a lateral presigmoid approach. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1055/s-0038-1669977DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240166PMC
December 2018
11 Reads

Trigeminal Nerve Schwannoma of the Cerebellopontine Angle.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S389-S390. Epub 2018 Sep 25.

Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, United States.

 Large and even moderate sized, extra-axial cerebellopontine angle (CPA) tumors may fill this restricted space and distort the regional anatomy. It may be difficult to determine even with high resolution magnetic resonance imaging (MRI) if the tumor is dural-based, or what the nerve of origin is if a schwannoma. While clinical history and exam are helpful, they are not unequivocal, particularly since many patients present with a myriad of symptoms, or conversely an incidental finding. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1055/s-0038-1669966DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240162PMC
December 2018
5 Reads

Natural History, Multimodal Management, and Quality of Life Outcomes of Trigeminal Schwannomas.

J Neurol Surg B Skull Base 2018 Dec 10;79(6):586-592. Epub 2018 May 10.

Department of Surgery, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.

 Trigeminal schwannomas are the second most common among intracranial schwannomas. These can arise from anywhere between the root and the distal extracranial branches of the trigeminal nerve. Clinical presentation depends on location and size, including but not limited to facial hypesthesia or pain, headaches, dizziness, ataxia, and diplopia. Read More

View Article

Download full-text PDF

Source
http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1651503
Publisher Site
http://dx.doi.org/10.1055/s-0038-1651503DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239870PMC
December 2018
5 Reads

Huge Greater Superficial Petrosal Nerve Schwannoma with Intradural Peritumoral Cyst.

World Neurosurg 2019 Feb 1;122:85-89. Epub 2018 Nov 1.

Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.

Background: Schwannoma originating from the greater superficial petrosal nerve is an extremely rare type of facial nerve schwannoma located in the middle cranial fossa around the midportion of the petrous bone. Here, we provide the first report of greater superficial petrosal nerve schwannoma presenting with contralateral facial palsy and hemiparesis due to compression of the pyramidal tract by associated intradural peritumoral cyst.

Case Description: A 69-year-old woman presented with a 6-month history of gradually worsening gait unsteadiness. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.10.129DOI Listing
February 2019

Hypoglossal canal schwannoma causing isolated left 12th cranial nerve palsy.

BMJ Case Rep 2018 Nov 1;2018. Epub 2018 Nov 1.

Department of Neurology, Vinayaka Neuro Multispeciality Clinic, Warangal, Telangana, India.

A 40-year-old woman presented with insidious onset, gradually progressive dysarthria and inability to manoeuvre bolus of food in her mouth while eating. The duration of her symptoms was 3 months. On evaluation, the left half of her tongue was wasted. Read More

View Article

Download full-text PDF

Source
http://casereports.bmj.com/lookup/doi/10.1136/bcr-2018-22554
Publisher Site
http://dx.doi.org/10.1136/bcr-2018-225544DOI Listing
November 2018
9 Reads

Sudden neurological deterioration due to repeated intratumoral hemorrhage in a patient with a vestibular schwannoma.

J Clin Neurosci 2018 Oct 28. Epub 2018 Oct 28.

Division of Neurosurgery, Vancouver General Hospital, 899, 12th Avenue West, Vancouver V5Z1M9, Canada.

Vestibular schwannomas (VS) are the most common tumors involving the cerebellopontine angle (CPA) and the internal auditory canal (IAC). These tumors are usually slow-growing and commonly present with cranial nerve dysfunction such as hearing loss. Repeated intratumoral hemorrhage (ITH) is extremely rare with only four cases previously reported. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jocn.2018.10.052DOI Listing
October 2018
1 Read

Vagus Nerve Schwannoma Mimicking a Lateral Neck Cyst.

J Craniofac Surg 2018 Nov;29(8):e827-e828

School of Medicine, University of Belgrade, Belgrade, Serbia.

Schwannomas are benign tumors originating from Schwann cells of the myelin sheath. The cystic appearance of a cervical vagal schwannoma is an extremely rare finding, with few patients reported in the literature. A 60-year-old female patient was seen at our service for a slow-growing, 9 × 6 cm left-sided cystic neck mass. Read More

View Article

Download full-text PDF

Source
http://Insights.ovid.com/crossref?an=00001665-900000000-9533
Publisher Site
http://dx.doi.org/10.1097/SCS.0000000000005006DOI Listing
November 2018
19 Reads

An Unusual Case of Schwannoma in the Infraorbital Region.

J Craniofac Surg 2018 Nov;29(8):e814-e815

Department of Radiology, Medical Faculty, Ataturk University, Erzurum, Turkey.

Schwannoma is usually an uncommon benign encapsulated slow-growing neural tumor that originates from Schwann cells of peripheral, cranial, and autonomic nerves. It constitutes 1% to 8% of all head and neck neoplasms. Extracranial schwannoma are very rarely seen originating from the infraorbital nerve. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1097/SCS.0000000000004853DOI Listing
November 2018
3 Reads

Vidian Nerve Schwannoma: A Rare Skull-Base Neoplasm Presenting with Ocular Manifestations: A Case Report and Literature Review.

Perm J 2018 ;22

Surgeon in the Department of Otolaryngology-Head and Neck Surgery at the Oakland Medical Center in CA

Introduction: Vidian nerve schwannomas are exceedingly rare, with only 7 cases reported since 2006. Patients presenting with ocular symptoms have been reported in only 1 case.

Case Presentation: A 54-year-old woman presented with a 3-month history of right periorbital pressure, third cranial nerve palsy, and visual field defect. Read More

View Article

Download full-text PDF

Source
http://www.thepermanentejournal.org/issues/2018/fall/6868-vi
Publisher Site
http://dx.doi.org/10.7812/TPP/18-021DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6172031PMC
January 2019
7 Reads

Diagnosis and management of pediatric cervical vagal schwannoma.

Int J Pediatr Otorhinolaryngol 2018 Nov 23;114:9-14. Epub 2018 Aug 23.

Department of Otolaryngology, Audiology and Phoniatrics, Pediatric Cochlear Implant Center, Children's Hospital of Bydgoszcz, Poland.

Schwannomas arising from the vagus nerve are extremely rare in children, with only 15 cases reported in the world literature. We describe a pediatric case of cervical vagal nerve schwannoma successfully treated with cranial nerve-sparing surgery. Our patient presented extensive mass in the right side of the neck with ipsilateral Horner's syndrome. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S01655876183041
Publisher Site
http://dx.doi.org/10.1016/j.ijporl.2018.08.021DOI Listing
November 2018
15 Reads
1.320 Impact Factor

Evaluation and Management of Facial Nerve Schwannoma.

Otolaryngol Clin North Am 2018 Dec 18;51(6):1179-1192. Epub 2018 Sep 18.

Department of Otolaryngology, Otology, Neurotology, and Skull Base Surgery, Harvard Medical School, Massachusetts Eye and Ear, 243 Charles Street, Boston, MA 02114, USA.

Facial nerve schwannomas are benign peripheral nerve sheath tumors that arise from Schwann cells, and most commonly present with facial paresis and/or hearing loss. Computed tomography and MRI are critical to diagnosis. Management decisions are based on tumor size, facial function, and hearing status. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.otc.2018.07.013DOI Listing
December 2018
1 Read

Neuroendoscopic Resection of Trigeminal Schwannoma in the Pterygopalatine/Infratemporal Fossa via the Transnasal Perpendicular Plate Palatine Bone or Transnasal Maxillary Sinus Approach.

World Neurosurg 2018 Dec 13;120:e1011-e1016. Epub 2018 Sep 13.

Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Chinese Medical Association Neuroendoscopic Training Base and Department of Neurosurgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, China. Electronic address:

Background: Both the pterygopalatine fossa (PPF) and the infratemporal fossa (ITF) lie outside the midline of the skull base. Lesions in the PPF or ITF include trigeminal schwannoma (trigeminal schwannoma, TS), which originates from the second or third branch of the trigeminal nerve (maxillary nerve or mandibular nerve). Due to their typically deep anatomic location, lesions in the PPF or ITF can be difficult to treat using traditional surgical approaches. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.08.216DOI Listing
December 2018
4 Reads

Role of Endoscopy in Resection of Intracanalicular Vestibular Schwannoma via Middle Fossa Approach: Technical Nuances.

World Neurosurg 2018 Dec 7;120:395-399. Epub 2018 Sep 7.

Department of Neurological Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA; Department of Otolaryngology-Head and Neck Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA. Electronic address:

Background: Surgical resection of vestibular schwannomas (VS) located within the internal auditory canal (IAC) is challenging, especially those located very laterally in the IAC. Various transcranial approaches have been described for resection of intracanalicular VS including retrosigmoid, translabyrinthine, and middle fossa approaches. Each approach has its indications, advantages, and limitations. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.08.215DOI Listing
December 2018
2 Reads

Recurrent isolated oculomotor nerve palsy caused by schwannoma in a pediatric patient.

Indian J Ophthalmol 2018 09;66(9):1367-1369

Department of Ophthalmology, Yeungnam University College of Medicine, Daegu, South Korea.

Isolated schwannomas of motor nerves to extraocular muscles are uncommon. In addition, most previous studies on oculomotor nerve schwannoma discuss adult patients, and pediatric cases are rare. We report a 10-year-old girl who developed recurrent oculomotor nerve palsy caused by schwannoma without any vascular malformation. Read More

View Article

Download full-text PDF

Source
http://www.ijo.in/text.asp?2018/66/9/1367/239350
Publisher Site
http://dx.doi.org/10.4103/ijo.IJO_340_18DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6113819PMC
September 2018
16 Reads

Using Three-Dimensional Printing to Create Individualized Cranial Nerve Models for Skull Base Tumor Surgery.

World Neurosurg 2018 Dec 16;120:e142-e152. Epub 2018 Aug 16.

Biomanufacturing Center, Department of Mechanical Engineering, Tsinghua University, Beijing, China. Electronic address:

Objective: Using three-dimensional (3D) printing to create individualized patient models of the skull base, the optic chiasm and facial nerve can be previsualized to help identify and protect these structures during tumor removal surgery.

Methods: Preoperative imaging data for 2 cases of sellar tumor and 1 case of acoustic neuroma were obtained. Based on these data, the cranial nerves were visualized using 3D T1-weighted turbo field echo sequence and diffusion tensor imaging-based fiber tracking. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.07.236DOI Listing
December 2018
21 Reads

Perioperative Care of the Patient With Acoustic Neuroma.

Authors:
Kristen A Oster

AORN J 2018 Aug;108(2):155-163

Acoustic neuromas, also known as vestibular schwannomas, are slow-growing, benign tumors that develop on the eighth cranial nerve. Common signs and symptoms of an acoustic neuroma include hearing loss and balance disturbances. A physical examination, a hearing evaluation, and diagnostic imaging assist in the diagnosis of an acoustic neuroma. Read More

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1002/aorn.12307
Publisher Site
http://dx.doi.org/10.1002/aorn.12307DOI Listing
August 2018
14 Reads

Multiple cranial nerve schwannomas and meningiomas as a hallmark sign of neurofibromatosis type 2 in a child.

Turk J Pediatr 2018 ;60(1):107-110

Department of Radiology, Sisli Hamidiye Etfal Training and Research Hospital, Sisli, Istanbul, Turkey.

Halefoğlu AM. Multiple cranial nerve schwannomas and meningiomas as a hallmark sign of neurofibromatosis type 2 in a child. Turk J Pediatr 2018; 60: 107-110. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.24953/turkjped.2018.01.018DOI Listing
January 2019
11 Reads

Continuous and Dynamic Facial Nerve Mapping During Surgery of Cerebellopontine Angle Tumors: Clinical Pilot Series.

World Neurosurg 2018 Nov 9;119:e855-e863. Epub 2018 Aug 9.

Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Düsseldorf, Düsseldorf, Germany.

Objective: To evaluate a new surgical tool combining suction and monopolar neurostimulation (stimulation sucker) for cerebellopontine angle (CPA) tumors. The usefulness for continuous (time) and dynamic (space) facial nerve mapping was studied.

Methods: Patients operated on with the stimulation sucker for a CPA tumor between April 2016 and May 2017 in a tertiary care center were identified. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.07.286DOI Listing
November 2018
16 Reads

Endoscopic Transvestibular Transmandibular Approach for Trigeminal Schwannoma in Infratemporal Fossa and Parapharyngeal Space.

World Neurosurg 2018 Oct 18;118:172-176. Epub 2018 Jul 18.

Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China. Electronic address:

Background: Schwannomas that involve the mandibular division of the trigeminal nerve and localize exclusively in the parapharyngeal space (PPS) and infratemporal fossa (ITF) are extremely rare, and a surgical approach to treat such tumors has not been well established.

Case Description: We present our experience in the treatment of a giant trigeminal schwannoma with wide extension in the ITF and PPS using an endoscopic transvestibular transmandibular approach. The clinical and radiologic findings, preoperative planning, advantages of the surgical approach, and clinical outcome are discussed. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.07.087DOI Listing
October 2018
4 Reads

Adjunctive Gamma Knife Surgery or Wait and Scan Policy After Optimal Resection of Large Vestibular Schwannomas: Clinical and Radiologic Outcomes.

World Neurosurg 2018 Oct 18;118:e895-e905. Epub 2018 Jul 18.

Department of Neurosurgery, North University Hospital, Assistance Publique-Hopitaux Marseille, Marseille, France.

Objectives: Patients with large vestibular schwannomas (VSs) will require surgical treatment owing to the potential consequences of long tract and cranial nerve compression. We assessed the long-term clinical and radiologic outcomes of patients harboring large VSs treated with a facial nerve (FN)-sparing technique.

Methods: We performed a single-center retrospective cohort study of 169 consecutive large VSs treated surgically from January 2003 to May 2015. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.07.093DOI Listing
October 2018
12 Reads

Stereotactic radiotherapy in three weekly fractions for the management of vestibular schwannomas.

Am J Otolaryngol 2018 Sep - Oct;39(5):561-566. Epub 2018 Jun 22.

Saint Louis University School of Medicine, Department of Otolaryngology - Head and Neck Surgery, 3635 Vista Ave, 6FDT, St. Louis, MO 63110, USA. Electronic address:

Purpose: This study evaluates the rates of tumor control, hearing preservation and cranial nerve toxicity with the use of CyberKnife stereotactic radiotherapy consisting of 2100 cGy to the 80% isodose line delivered in three weekly fractions to treat vestibular schwannomas.

Materials And Methods: Retrospective chart review of vestibular schwannoma patients treated with CyberKnife stereotactic radiotherapy or undergoing watchful waiting between 2006 and 2017 was performed. For inclusion, patients receiving CyberKnife stereotactic radiotherapy must have had pretreatment magnetic resonance imaging and audiography, and 2 follow-up magnetic resonance imaging and audiograms. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.amjoto.2018.06.017DOI Listing
January 2019
24 Reads

Hearing Preservation After Translabyrinthine Vestibular Schwannoma Excision: Audiometry and Electrocochleography Results.

Ann Otol Rhinol Laryngol 2018 Aug 25;127(8):563-567. Epub 2018 Jun 25.

2 The Ohio State University Wexner Medical Center, Department of Otolaryngology-Head and Neck Surgery, Division of Otology, Neurotology, and Cranial Base Surgery, Columbus, Ohio, USA.

Objectives: To describe a case of inadvertent hearing preservation following a classical translabyrinthine resection of a vestibular schwannoma of the internal auditory canal in an otherwise healthy patient.

Methods: Herein, we describe the case of an otherwise healthy patient who underwent resection of an intracanalicular vestibular schwannoma via a translabyrinthine approach. Furthermore, as part of an ongoing study aimed at characterizing hearing changes due to intraoperative events, cochlear hair cell and nerve activity were monitored using electrocochleography throughout surgery. Read More

View Article

Download full-text PDF

Source
http://journals.sagepub.com/doi/10.1177/0003489418783788
Publisher Site
http://dx.doi.org/10.1177/0003489418783788DOI Listing
August 2018
12 Reads

Gamma knife radiosurgery for trigeminal schwannoma: a 20-year experience with long-term treatment outcome.

J Neurooncol 2018 Oct 21;140(1):89-97. Epub 2018 Jun 21.

Department of Neurosurgery, College of Medicine, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, South Korea.

Purpose: This study evaluated the long-term tumor control rate (TCR) and symptomatic outcomes of patients treated with gamma knife radiosurgery (GKRS) for trigeminal schwannomas (TSs).

Methods: Thirty-two patients with TS who underwent GKRS between January 1994 and January 2013 with at least 2 years of follow-up were enrolled in the study. Clinical charts and surgical records were retrospectively reviewed to evaluate factors affecting TCR and symptomatic outcomes. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s11060-018-2934-1DOI Listing
October 2018
8 Reads
3.070 Impact Factor

Tumor-associated hemorrhage in patients with vestibular schwannoma.

Acta Neurochir (Wien) 2018 Jun 18. Epub 2018 Jun 18.

Department of Neurosurgery, West China Hospital of Sichuan University, No.37, Guoxue Alley, Chengdu, 610041, Sichuan Province, People's Republic of China.

Object: Intratumoral hemorrhage (ITH) associated with vestibular schwannomas (VS) is very rare. We retrospectively analyzed VS patients presenting with ITH in our department to further gain a better understanding of this uncommon clinical presentation.

Methods: We treated seven patients who had VS presenting with ITH between January 2012 and June 2017. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00701-018-3588-7DOI Listing
June 2018
8 Reads
1.790 Impact Factor

Schwannomatosis: a genetic and epidemiological study.

J Neurol Neurosurg Psychiatry 2018 Nov 16;89(11):1215-1219. Epub 2018 Jun 16.

Department of Genomic Medicine, St Mary's Hospital, Manchester Academic Health Sciences Centre (MAHSC), Division of Evolution and Genomic Science, University of Manchester, Manchester, UK.

Objectives: Schwannomatosis is a dominantly inherited condition predisposing to schwannomas of mainly spinal and peripheral nerves with some diagnostic overlap with neurofibromatosis-2 (NF2), but the underlying epidemiology is poorly understood. We present the birth incidence and prevalence allowing for overlap with NF2.

Methods: Schwannomatosis and NF2 cases were ascertained from the Manchester region of England (population=4. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1136/jnnp-2018-318538DOI Listing
November 2018
9 Reads
1 Citation
6.810 Impact Factor

Does a "Fundal Fluid Cap" Predict Successful Hearing Preservation in Vestibular Schwannoma Resections Via the Middle Cranial Fossa Approach?

Otol Neurotol 2018 Jul;39(6):772-777

Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa.

Objective: To determine the association between radiographic cerebrospinal fluid (CSF) cap in the lateral internal auditory canal (IAC) and likelihood of successful hearing preservation in middle cranial fossa (MCF) vestibular schwannoma (VS) surgery.

Study Design: Retrospective chart review.

Setting: Academic tertiary referral center. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1097/MAO.0000000000001811DOI Listing
July 2018
18 Reads

Primary Skull Base Lymphoma: Manifestations and Clinical Outcomes of a Great Imitator.

Otolaryngol Head Neck Surg 2018 Oct 8;159(4):643-649. Epub 2018 May 8.

2 Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, USA.

Objectives Primary skull base lymphoma (PSBL) represents a rare manifestation of extranodal lymphoma. Presenting with nonspecific symptomatology and imaging findings, PSBL often masquerades as more common cranial base pathology and thus can present a diagnostic challenge. The objectives of this study were to characterize the manifestations and clinical outcomes of PSBL. Read More

View Article

Download full-text PDF

Source
http://journals.sagepub.com/doi/10.1177/0194599818773994
Publisher Site
http://dx.doi.org/10.1177/0194599818773994DOI Listing
October 2018
6 Reads

A Small Glossopharyngeal Schwannoma Presenting with Intractable Vomiting: Case Presentation and Literature Review.

World Neurosurg 2018 Jul 11;115:101-104. Epub 2018 Apr 11.

Department of Neurosurgery, Cleveland Clinic Florida, Weston, Florida, USA. Electronic address:

Background: Glossopharyngeal schwannomas are rare tumors. Clinical and radiologic presentation closely resembles those of vestibular schwannomas. Their clinical presentation varies from vestibulocochlear dysfunction to glossopharyngeal and vagal nerve dysfunction. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.04.002DOI Listing
July 2018
3 Reads

Safety and efficacy of single-fraction gamma knife radiosurgery for benign confined cavernous sinus tumors: our experience and literature review.

Neurosurg Rev 2018 Apr 9. Epub 2018 Apr 9.

Department of Medical Physics, Panjab University, Chandigarh, 160012, India.

Gamma knife radiosurgery (GKRS) has emerged as a suitable primary treatment option for confined cavernous sinus tumors (CSTs) and residual/recurrent benign tumors extending from the surrounding neighborhood. The aim of this review was to further investigate the safety and efficacy of single-fraction GKRS for primary confined CSTs (hemangioma, meningioma, and schwannoma). This was a retrospective analysis of 16 patients of CSTs, primarily treated with GKRS between 2009 and 2017. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10143-018-0975-8DOI Listing
April 2018
3 Reads

Place of Gamma Knife Stereotactic Radiosurgery in Grade 4 Vestibular Schwannoma Based on Case Series of 86 Patients with Long-Term Follow-Up.

World Neurosurg 2018 Jun 31;114:e1192-e1198. Epub 2018 Mar 31.

ENT, Hospital Timone, Aix-Marseille University, Marseille, France.

Introduction: Grade IV vestibular schwannoma (Koos classification) is generally considered to be an indication for microsurgical resection or combined radiosurgery-microsurgery. However, the place of Gamma Knife stereotactic surgery (GK-SRS), either as first-line treatment or when progression of residual tumor compresses the brainstem, has not been clearly evaluated. This article reports the results of a large case series of patients with grade 4 vestibular schwannoma treated by GK-SRS. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.03.175DOI Listing
June 2018
7 Reads

Transventricular Transvelar Approach to Trochlear Nerve Schwannoma: Novel Technique to Lesions of Inferior Pineal Region.

World Neurosurg 2018 Jun 27;114:274-280. Epub 2018 Mar 27.

Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Neurosurgery, Shiraz University of Medical Sciences, Shiraz, Iran.

Objectives: The schwannoma of the trochlear nerve is rare and originates mostly from the distal parts in the interpeduncular cistern. A lesion on the proximal segment in the inferior pineal region is extremely rare. Because of the rarity of the disease, the surgical approach to this region for the resection of trochlear nerve schwannoma has not been well documented in the literature. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.03.132DOI Listing
June 2018
3 Reads
2.420 Impact Factor

Acute Deafness: A Rare Complication of Shunting.

World Neurosurg 2018 May 30;113:276-279. Epub 2018 Mar 30.

Division of Skull Base and Vascular Neurosurgery, National Institute of Neurosurgery Dr Asenjo, Universidad de Chile, Santiago, Chile.

Background: Mild hearing loss following shunting has been described; however, severe auditory impairment associated with ventriculoperitoneal (VP) shunt is an uncommon, rarely reported phenomenon. Treatment options and pathophysiologic considerations are discussed in this case report.

Case Description: A 27-year-old man who was treated for an eighth cranial nerve schwannoma with complete resection and a VP shunt 10 years previously presented to the emergency department with acute severe hearing loss and headache. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.02.089DOI Listing
May 2018
4 Reads

Microvascular Decompression for Treatment of Trigeminal Neuralgia in Patient with Facial Nerve Schwannoma.

World Neurosurg 2018 May 21;113:142-145. Epub 2018 Feb 21.

Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, USA; Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA. Electronic address:

Background: Secondary trigeminal neuralgia (TN) is uncommon. When a space-occupying lesion with mass effect is identified, the associated TN is often exclusively attributed to the tumor. This report illustrates the importance of considering coexistent actionable pathology when surgically treating secondary TN. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.02.079DOI Listing
May 2018
45 Reads

Malignant Peripheral Nerve Sheath Tumor of the Trigeminal Nerve Involving the Middle and Posterior Cranial Fossa.

World Neurosurg 2018 Apr 3;112:221-226. Epub 2018 Feb 3.

Department of Neurosurgery, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi, China. Electronic address:

Background: Although benign trigeminal schwannomas are uncommon, malignant peripheral nerve sheath tumors (MPNSTs) of the trigeminal nerve are extraordinarily rare.

Case Description: A 56-year-old female presented with a 2-month-long history of numbness of the right face and progressive weakness of the left limbs. Preoperative neuroimages indicated a giant tumor involving the middle and posterior cranial fossa with similar radiologic characteristics to benign trigeminal schwannomas. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.01.179DOI Listing
April 2018
9 Reads

Microvascular Brainstem Ischemia After Vestibular Schwannoma Surgery: A Clinical and Microanatomic Study.

World Neurosurg 2018 Apr 31;112:e415-e424. Epub 2018 Jan 31.

Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.

Objective: To identify a potential microvascular etiology in patients who underwent vestibular schwannoma surgery (VSS) complicated by postoperative microvascular brainstem ischemia.

Methods: Charts were retrospectively reviewed of all patients who had an MRI within 14 days of VSS in years 2005-2016. Patient characteristics, preoperative and postoperative imaging features, clinical course and potential predictors of brainstem ischemia were recorded. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2018.01.056DOI Listing
April 2018
7 Reads
2.420 Impact Factor

A comparison of semi-automated volumetric vs linear measurement of small vestibular schwannomas.

Eur Arch Otorhinolaryngol 2018 Apr 15;275(4):867-874. Epub 2018 Jan 15.

Cambridge Skull Base Unit, Department of ENT, Addenbrookes Hospital, Cambridge University Hospitals, Cambridge, CB2 0QQ, UK.

Objective: Accurate and precise measurement of vestibular schwannoma (VS) size is key to clinical management decisions. Linear measurements are used in routine clinical practice but are prone to measurement error. This study aims to compare a semi-automated volume segmentation tool against standard linear method for measuring small VS. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00405-018-4865-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5838150PMC
April 2018
3 Reads

Facial Nerve Schwannoma: A Case Report, Radiological Features and Literature Review.

Surg Technol Int 2017 Dec;31:400-402

Department of Neurosurgery, Cremona Hospital, Cremona, Italy.

Facial nerve schwannoma localized in the middle fossa is a rare lesion. We report a case of a facial nerve schwannoma in a 30-year-old male presenting with facial nerve palsy. Magnetic resonance imaging (MRI) showed a 3 cm diameter tumor of the right middle fossa. Read More

View Article

Download full-text PDF

Source
December 2017
3 Reads

Congress of Neurological Surgeons Systematic Review and Evidence-Based Guidelines on the Role of Radiosurgery and Radiation Therapy in the Management of Patients With Vestibular Schwannomas.

Neurosurgery 2018 Feb;82(2):E49-E51

Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia.

Question: What are the indications for stereotactic radiosurgery (SRS) treatment vs observation for patients with intracanalicular vestibular schwannomas without evidence of radiographic progression?

Recommendation: Level 3: If tinnitus is not observed at presentation, it is recommended that intracanalicular vestibular schwannomas and small tumors (<2 cm) without tinnitus be observed as observation does not have a negative impact on tumor growth or hearing preservation compared to treatment.

Question: Is there a difference in outcome based on radiosurgery equipment used: Gamma Knife (Elekta, Stockholm, Sweden) vs linear accelerator-based radiosurgery vs proton beam?

Recommendation: There are no studies that compare 2 or all 3 modalities. Thus, recommendations on outcome based on modality cannot be made. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1093/neuros/nyx515DOI Listing
February 2018
9 Reads

Cerebellopontine Angle Schwannoma and Meningioma in Contiguity: Surgical Implications in Neurofibromatosis.

J Neurol Surg A Cent Eur Neurosurg 2018 Mar 14;79(2):177-180. Epub 2017 Dec 14.

Department of Neurosurgery, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India.

Concurrent occurrence of brain tumors in the same location is very unusual and has been noted in patients with neurofibromatosis. Two lesions, occurring in close contact but of different histology, are called contiguous tumors. Schwannoma and meningioma are the two common histologies reported to present as contiguous tumor. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1055/s-0037-1608873DOI Listing
March 2018
9 Reads

Gamma Knife Stereotactic Radiosurgery for Nonvestibular Cranial Nerve Schwannomas.

World Neurosurg 2018 Feb 6;110:e1031-e1039. Epub 2017 Dec 6.

Division of Neurosurgery, Department of Surgery, Université de Sherbrooke, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Québec, Canada. Electronic address:

Background: Nonvestibular cranial schwannomas represent a rare type of benign intracranial tumor. Few studies have evaluated the use of stereotactic radiosurgery (SRS) as a primary management option for these lesions. We performed a retrospective review of our institution's experience focusing on efficacy with regard to tumor control and clinical symptom stabilization as well as treatment safety. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.wneu.2017.11.163DOI Listing
February 2018
11 Reads

Orbital Frontal Nerve Schwannoma-Distinctive Radiological Features.

Am J Ophthalmol 2018 02 2;186:41-46. Epub 2017 Dec 2.

Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.

Purpose: To review the radiological findings of frontal nerve schwannoma of the orbit and determine distinguishing imaging features.

Design: Retrospective interventional case series.

Methods: Setting: Single tertiary institution. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.ajo.2017.11.012DOI Listing
February 2018
28 Reads