Nonvestibular Schwannomas of the Brain: A 7-Year Experience

Neurosurgery ◽  
2002 ◽  
Vol 50 (3) ◽  
pp. 437-449 ◽  
Author(s):  
Sajjan Sarma ◽  
Laligam N. Sekhar ◽  
David A. Schessel
Keyword(s):  
Tumor Resection ◽  
Cranial Nerves ◽  
Abducens Nerve ◽  
Functional Results ◽  
Senior Author ◽  
Karnofsky Performance Scale ◽  
Lumbar Drain ◽  
Scale Scores ◽  
The Brain

Abstract OBJECTIVE: Nonvestibular schwannomas are uncommon tumors of the brain. Trigeminal nerve schwannomas are the most common of this group, followed by glossopharyngeal, vagal, facial, accessory, hypoglossal, oculomotor, trochlear, and abducens nerve schwannomas, in descending order of frequency. We present a series of nonvestibular schwannomas that were surgically treated during a 7-year period. METHODS: Forty-six patients with schwannomas of Cranial Nerves V (26 cases), VII (7 cases), IX, X, and XI (9 cases), XII (3 cases), and III (1 case) were microsurgically treated by the senior author (LNS) during a 7-year period, from 1993 to 2000. The clinical presentations, operative approaches, complications, and results were studied. RESULTS: Forty-five patients underwent gross total tumor resection in the first operation. One patient who had undergone subtotal tumor resection in the initial operation experienced a large recurrence after 4 years, and gross total tumor resection was achieved in the second operation. There were no postoperative deaths. Postoperative morbidity consisted of cerebrospinal fluid leaks for 5 patients (3 patients required a second operation to repair the leak, and 2 patients responded to lumbar drain placement), meningitis for 3 patients (2 cases were aseptic and 1 involved bacterial meningitis, which resolved with antibiotic therapy), vasospasm requiring angioplasty for 1 patient, temporary hemiparesis for 2 patients (who experienced good recoveries), and permanent hemiparesis for 1 patient. New cranial nerve deficits were observed for 24% of patients but were usually partial. The mean follow-up period was 33.3 months (range, 0.2–93 mo). No patient experienced tumor recurrence after complete tumor removal. The patient who experienced regrowth of the tumor did not exhibit recurrence after the second operation. The Karnofsky Performance Scale scores at the latest follow-up examination were 80 or more for 45 patients (98%) and 70 for 1 patient. CONCLUSION: Nonvestibular schwannomas can be treated via microsurgical excision, with excellent functional results. Recurrence is rare after total tumor excision, although much longer follow-up monitoring is required.

scholarly journals Individualized Cerebral Artery Protection Strategies for the Surgical Treatment of Parasellar Meningiomas on the Basis of Preoperative Imaging

2021 ◽  
Vol 11 ◽  
Author(s):  
Yang Li ◽  
XingShu Zhang ◽  
Jun Su ◽  
Chaoying Qin ◽  
Xiangyu Wang ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Cerebral Artery ◽  
Tumor Resection ◽  
Cranial Nerves ◽  
Preoperative Imaging ◽  
Surgical Approaches ◽  
Karnofsky Performance Scale ◽  
Protection Strategies

ObjectiveParasellar meningiomas (PMs) represent a cohort of skull base tumors that are localized in the parasellar region. PMs tend to compress, encase, or even invade the cerebral arteries and their perforating branches. The surgical resection of PMs without damaging neurovascular structures is challenging. This study aimed to analyze functional outcomes in a series of patients who underwent surgery with individualized cerebral artery protection strategies based on preoperative imaging.MethodsA retrospective review was performed on a single surgeon’s experience of the microsurgical removal of PMs in 163 patients between January 2012 and March 2020. Individualized approaches with a bidirectional dissection strategy were used. Cerebral artery invasion classification, neurological outcomes, MRC Scale for muscle strength, and Karnofsky performance scale were used to assess tumor vascular invasion, functional outcome, and patient quality-of-life outcomes, respectively.ResultsTotal resection (Simpson grade I or II) was achieved in 114 patients (69.9%) in our study. A total of 44.7% of patients had improved vision at consecutive follow-ups, 51.1% were stable, and 3.8% deteriorated. Improvements in cranial nerves III, IV, and VI were observed in 41.1%, 36.2%, and 44.8% of patients, respectively. The mean follow-up time was (38.8 ± 27.9) months, and the KPS at the last follow-up was 89.6 ± 8.5. Recurrence was observed in eight patients (13.8%) with cavernous sinus meningiomas, and the recurrence rates in anterior clinoid meningiomas and medial sphenoid wing meningiomas were 3.8% and 2.8%, respectively.ConclusionsPreoperative imaging is important in the selection of surgical approaches. Maximum tumor resection and cerebral artery protection can be achieved concurrently by utilizing the bidirectional dissection technique. Individualized cerebral artery protection strategies provide great utility in improving a patient’s quality of life.

scholarly journals RONC-26. A CASE OF RADIATION NECROSIS OF THE CEREBELLUM 16 YEARS AFTER CHEMORADIOTHERAPY FOR MEDULLOBLASTOMA

2020 ◽  
Vol 22 (Supplement_3) ◽  
pp. iii460-iii460
Author(s):  
Mayuko Miyata ◽  
Masahiro Nonaka ◽  
Akio Asai
Keyword(s):  
Radiation Necrosis ◽  
Tumor Resection ◽  
Pathological Examination ◽  
Secondary Cancer ◽  
Brain Necrosis ◽  
Cerebellar Medulloblastoma ◽  
Cerebellar Peduncle ◽  
The Right ◽  
The Brain

Abstract BACKGROUND If new lesions are observed during follow-up of the malignant tumor after treatment, it is difficult to distinguish whether the tumor is a recurrent lesion, secondary cancer, or radiation necrosis of the brain. We have encountered a patient with symptomatic radiation necrosis of the cerebellum 16 years after treatment of medulloblastoma. CASE PRESENTATION: A 24-year-old man who had received a tumor resection and chemoradiotherapy for cerebellar medulloblastoma at the age of 8 presented with dizziness. For the past 16 years, there was no recurrence of the tumor. He subsequently underwent MRI scan, and T1-Gd image showed enhanced lesion in the right cerebellar peduncle. Cerebrospinal fluid cytology analysis was negative for tumor. We suspected tumor reccurence or secondary cancer, and performed lesion biopsy. The result of the pathological examination was radiation necrosis of the cerebellum. DISCUSSION: The interval of radiation necrosis of the brain and radiotherapy can vary from months to more than 10 years. So, whenever a new lesion is identified, radiation brain necrosis must be envisioned. According to guidelines in Japan, there is no absolute examination for discriminating tumor recurrence from radiation brain necrosis and diagnosis by biopsy may be required. CONCLUSION We experienced a case of symptomatic radiation necrosis of the cerebellum 16 years after treatment. In patients showing new lesion after long periods of time, the possibility of radiation necrosis to be considered.

scholarly journals Adjuvant hypofractionated partial-brain radiation therapy for pediatric Ewing sarcoma brain metastases: case report

2016 ◽  
Vol 17 (4) ◽  
pp. 434-438 ◽  
Author(s):  
Ritchell van Dams ◽  
Henry S. Park ◽  
Ahmed K. Alomari ◽  
Adele S. Ricciardi ◽  
Harini Rao ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Case Report ◽  
Ewing Sarcoma ◽  
Tumor Resection ◽  
Symptomatic Treatment ◽  
Reasonable Approach ◽  
Inflammatory Changes ◽  
Brain Radiation ◽  
The Brain

This case report demonstrates that hypofractionated partial-brain radiation therapy with limited margins is a reasonable approach following gross tumor resection of Ewing sarcoma metastases to the brain. The patient presented with 2 intracranial metastases treated with gross-total resection followed by radiation therapy to 30 Gy in 5 fractions. The patient experienced symptomatic treatment-related inflammatory changes with resolution after receiving dexamethasone. He remains alive at 21 months of follow-up with no evidence of disease.

scholarly journals Safe maximal resection of primary cavernous sinus meningiomas via a minimal anterior and posterior combined transpetrosal approach

2018 ◽  
Vol 44 (4) ◽  
pp. E11 ◽  
Author(s):  
Hiroki Morisako ◽  
Takeo Goto ◽  
Hiroki Ohata ◽  
Sachin Ranganatha Goudihalli ◽  
Keisuke Shirosaka ◽  
...  
Keyword(s):  
Cavernous Sinus ◽  
Cranial Nerves ◽  
Previous Treatment ◽  
Extent Of Resection ◽  
Karnofsky Performance Scale ◽  
Prepontine Cistern ◽  
Suboccipital Craniotomy ◽  
Ocular Movements ◽  
Visual Access ◽  
Scale Scores

OBJECTIVEMeningiomas arising from the cavernous sinus (CS) continue to be a significant technical challenge, and resection continues to carry a relatively higher risk of neurological morbidity in patients with these lesions because of the tumor’s proximity to neurovascular structures. The authors report the surgical outcomes of 9 patients with primary CS meningiomas (CSMs) that were surgically treated using a minimal anterior and posterior combined (MAPC) transpetrosal approach, and they emphasize the usefulness of the approach.METHODSThis retrospective study included 9 patients who underwent surgery for CSM treatment between 2015 and 2016 via the MAPC transpetrosal approach. Two patients were men and 7 were women, with a mean age of 58.5 years (39–72 years). Five patients (55.5%) had undergone previous treatment. The surgical technique consisted of a temporo-occipito-suboccipital craniotomy and exposure of the posterolateral part of the CS via the presigmoidal MAPC approach. After opening Meckel’s cave and identifying the 3rd–5th cranial nerves in the prepontine cistern, Parkinson’s triangle and supratrochlear triangles were opened. Finally, the tumor occupying the posterolateral part of the CS was removed.RESULTSAll lesions were safely and maximally removed, with preservation of external ocular movements and preoperative Karnofsky Performance Scale scores. The mean extent of resection was 77.0% (range 58.7%–95.4%). Six patients underwent adjuvant therapy in the form of stereotactic radiosurgery (SRS) or stereotactic radiotherapy (SRT) during the follow-up period; none of these patients experienced recurrence.CONCLUSIONThe authors conclude that the MAPC transpetrosal approach could be superior to other approaches for CSMs, as it provides direct visual access to the posterolateral portion of the CS. In their experience, this approach is an alternative and better option for safe maximal resection of CSMs.

Craniofacial approaches to large juvenile angiofibromas

2011 ◽  
Vol 8 (1) ◽  
pp. 71-78 ◽  
Author(s):  
M. Yashar S. Kalani ◽  
Maziyar A. Kalani ◽  
Samuel Kalb ◽  
Felipe C. Albuquerque ◽  
Cameron G. McDougall ◽  
...  
Keyword(s):  
Average Duration ◽  
Karnofsky Performance Scale ◽  
Preoperative Embolization ◽  
Large Juvenile ◽  
Csf Leakage ◽  
Scale Scores ◽  
Duration Of Hospitalization ◽  
Performance Scale ◽  
Related Mortality

Object Craniofacial approaches provide excellent exposure to lesions in the anterior and middle cranial fossae. The authors review their experience with craniofacial approaches for resection of large juvenile nasopharyngeal angiofibromas. Methods Between 1992 and 2009, 22 patients (all male, mean age 15 years, range 9–27 years) underwent 30 procedures. These cases were reviewed retrospectively. Results Gross-total resection of 17 (77%) of the 22 lesions was achieved. The average duration of hospitalization was 8.2 days (range 3–20 days). The rate of recurrence and/or progression was 4 (18%) of 22, with recurrences occurring a mean of 21 months after the first resection. All patients underwent preoperative embolization. Nine patients (41%) developed complications, the most common of which was CSF leakage (23%). The average follow-up was 27.7 months (range 2–144 months). The surgery-related mortality rate was 0%. Based on their mean preoperative (90) and postoperative (90) Karnofsky Performance Scale scores, 100% of patients improved or remained the same. Conclusions The authors' experience shows that craniofacial approaches provide an excellent avenue for the resection of large juvenile nasopharyngeal angiofibromas, with acceptable rates of morbidity and no deaths.

scholarly journals Abducens nerve palsy on a patient with sphenoid fungal rhinosinusitis and cavernous sinus meningioma – Case report

2018 ◽  
Vol 8 (31) ◽  
pp. 193-196
Author(s):  
Andreea Marza ◽  
Claudiu Manea
Keyword(s):  
Cavernous Sinus ◽  
Nerve Palsy ◽  
Abducens Nerve ◽  
Complete Removal ◽  
Abducens Nerve Palsy ◽  
Cavernous Sinus Meningioma ◽  
Fungal Rhinosinusitis ◽  
Wait And See ◽  
The Brain

Abstract We report a case of a 47-year-old patient recently diagnosed with left abducens nerve palsy, who was admitted in our clinic with diplopia. The cranio-facial CT scan revealed left sphenoid fungal rhinosinusitis and the patient underwent endoscopic surgery with complete removal of the fungal material. The immediate postoperative evolution of the patient was favourable, with partial improvement of diplopia. The first month follow-up visit revealed the recurrence of the diplopia, so the patient performed an MRI scan of the brain that showed a cavernous sinus meningioma. The patient was referred to a neurosurgeon who choose a “wait-and-see” strategy instead of surgery. The paper presents the limits of computed tomography versus magnetic resonance imaging in the radiologic diagnosis of intracranial tumors.

Cranial Nerves and Cranial Nerve Nuclei

2017 ◽  
Author(s):  
Peggy Mason
Keyword(s):  
Cranial Nerve ◽  
Cranial Nerves ◽  
Sensory Information ◽  
Abducens Nerve ◽  
Motor Information ◽  
Anatomical Arrangement ◽  
Cranial Nerve Injuries ◽  
Nerve Dysfunction ◽  
The Common ◽  
The Brain

The functions of cranial nerves, conduits for sensory information to enter and motor information to exit the brain, and the common complaints arising from cranial nerve injuries are described. The modified anatomical arrangement of sensory and motor territories in the brainstem provides a framework for understanding the organization of the cranial nerve nuclei. A thorough grounding in the anatomy of cranial nerves and cranial nerve nuclei allows the student to deduce whether a given set of symptoms arises from a central or peripheral lesion. The near triad, pupillary light reflex, and Bell’s palsy are particularly emphasized. The contributions of the six extraocular muscles to controlling eye position and to potential diplopia are described along with the consequences of oculomotor, trochlear, and abducens nerve dysfunction. The potential for lesions of facial, glossopharyngeal, vagus, and hypoglossal nerves to yield dysphagia and dysarthria are outlined.

Individualized Cerebral Artery Protection Strategies for the Surgical Treatment of Parasellar Meningiomas Based on Preoperative Imaging

2021 ◽  
Author(s):  
Yang Li ◽  
Xingshu Zhang ◽  
Chaoying Qin ◽  
Jun Su ◽  
Xiangyu Wang ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Cerebral Artery ◽  
Cerebral Arteries ◽  
Tumor Resection ◽  
Preoperative Imaging ◽  
Karnofsky Performance Scale ◽  
Simpson Grade ◽  
Protection Strategies

Abstract OBJECTIVE Parasellar meningiomas represent a cohort of skull base tumors localize to parasellar region. Those meningiomas tend to compress, encase or even invade cerebral arteries and their perforating branches. Surgical resection of PMs is a challenging operation without damaging perforating arteries. The study aimed to analyze functional outcomes in a series of patients who underwent surgery with individualized cerebral arteries protection strategy based on preoperative imaging. METHODS A retrospective review of a single surgeon’s experience with microsurgical removal of PMs in 163 patients between January 2012 to March 2020. Individualized approaches with bidirectional dissection strategy were used. Cerebral Artery invasion classification, neurological outcomes, MRC Scale Muscle Strength Grading, and Karnofsky Performance Scale were used to assess the tumor vascular invasion, functional outcome, and patient quality-of-life outcomes, respectively. RESULTS Total resection (Simpson Grade I or II) was achieved in 114 (69.9%) patients in our series. Vision improved in 44.7% of patients with consecutive follow-up, was stable in 51.1% and deteriorated in 3.8%. Improvement in cranial nerve IIII, IV, and VI was observed in 41.1%, 36.2%, and 44.8%, respectively. The mean follow-up time was (38.8±27.9) months and KPS at the last follow-up was (89.6±8.5). Recurrence was observed in 8 (13.8%) patients with CSMs while the rate was only 3.8% and 2.8% in ACMs and MSWMs. CONCLUSIONS Preoperative imaging is of great significance in the selection of surgical approach. Maximum tumor resection and cerebral artery protection can be achieved concurrently utilizing bidirectional dissection. Those Individualized cerebral artery protection strategies not only are of great utility to neurosurgeons but also can improve patient’s quality of life.

Microsurgical Resection of Glomus Jugulare Tumors With Facial Nerve Reconstruction: 3-Dimensional Operative Video

2018 ◽  
Vol 16 (1) ◽  
pp. E1-E1 ◽  
Author(s):  
Duarte N C Cândido ◽  
Jean Gonçalves de Oliveira ◽  
Luis A B Borba
Keyword(s):  
Facial Nerve ◽  
Infratemporal Fossa ◽  
Tumor Resection ◽  
Cranial Nerves ◽  
Jugular Foramen ◽  
Jugular Bulb ◽  
Senior Author ◽  
Nerve Reconstruction ◽  
Glomus Jugulare ◽  
Carotid Canal

Abstract Paragangliomas are tumors originating from the paraganglionic system (autonomic nervous system), mostly found at the region around the jugular bulb, for which reason they are also termed glomus jugulare tumors (GJT). Although these lesions appear to be histologically benign, clinically they present with great morbidity, especially due to invasion of nearby structures such as the lower cranial nerves. These are challenging tumors, as they need complex approaches and great knowledge of the skull base. We present the case of a 31-year-old woman, operated by the senior author, with a 1-year history of tinnitus, vertigo, and progressive hearing loss, that evolved with facial nerve palsy (House-Brackmann IV) 2 months before surgery. Magnetic resonance imaging and computed tomography scans demonstrated a typical lesion with intense flow voids at the jugular foramen region with invasion of the petrous and tympanic bone, carotid canal, and middle ear, and extending to the infratemporal fossa (type C2 of Fisch's classification for GJT). During the procedure the mastoid part of the facial nerve was identified involved by tumor and needed to be resected. We also describe the technique for nerve reconstruction, using an interposition graft from the great auricular nerve, harvested at the beginning of the surgery. We achieved total tumor resection with a remarkable postoperative course. The patient also presented with facial function after 6 months. The patient consented with publication of her images.

scholarly journals Microneurosurgical Management of Posterior Inferior Cerebellar Artery Aneurysms: Results of a Consecutive Series

2021 ◽  
pp. 33-38
Author(s):  
Mattia Del Maestro ◽  
Sabino Luzzi ◽  
Renato Galzio
Keyword(s):  
Posterior Inferior Cerebellar Artery ◽  
Cranial Nerves ◽  
Lateral Approach ◽  
Senior Author ◽  
Preoperative Imaging ◽  
Imaging Evaluation ◽  
Complex Anatomy ◽  
Cerebellar Artery ◽  
Pica Aneurysms

AbstractAneurysms of the posterior inferior cerebellar artery (PICA) are uncommon. The complex anatomy of PICA and its intimate relationships with medulla, lower cranial nerves, and jugular tubercle makes the surgical treatment of these aneurysms fascinating. The reported is study aimed at a critical review of the overall results of a personal series of PICA aneurysms, treated by the senior author, R. Galzio. Demographics, charts, videos, outcome, and follow-up of a cohort of PICA aneurysms managed in the last 10 years were retrospectively analyzed, focusing only upon those treated with microneurosurgery. Twenty-five patients, harboring a single aneurysm, were operated on. Fifteen aneurysms were ruptured. Nineteen were proximal, all of these being been treated through a far-lateral approach. Trans-condylar or trans-tubercular variants were rarely necessary and however reserved to peculiar cases. Twenty-three aneurysms underwent direct treatment consisting of clip ligation. At 6-month follow-up, 60% of patients had a modified Rankin Score (mRS) of 0–2. Given the high anatomical variability of both PICA and patients’ bony anatomy, a case-by-case meticulous preoperative imaging evaluation is mandatory for the choice of the most suitable and tailored surgical corridor which, in turn, is pivotal to achieve the best outcome.

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