cranial nerve neoplasms

..To our knowledge, thoracoscopic removal of a left recurrent nerve schwannoma has not been reported in the literature before...

..This case supports the role of the brainstem, especially the pons, in the control of laughter and, perhaps, of the medial temporal lobe too...

..Radiologists with a special interest and experience in otoneurological radiology should ideally report these images, and a close co-operation between ENT surgeon and radiologist is essential in arriving at a proper diagnosis...

..07%-0.28% of all intracranial tumours. Advances in skull base surgery have led to more aggressive resection of these tumours, but surgery may associated with development of new neurological deficits...

..The operative findings indicated that this schwannoma may have arisen from the meningeal branch of the trigeminal nerve in the dura mater of the middle fossa...

..We report the MRI findings and illustrate the normal and diseased trigeminal nerve at Meckel's cave, the cavernous sinus, the skull base foramina, the pterygopalatine fossa and the peripheral branches...

..Gamma-knife radiosurgery resulted in a significant improvement in masticatory sensation following an increase in occlusal force...

..Finally, the decision on how to treat these patients should be individualized and based on initial facial function, growth rate, surgical experience, and informed patient consent...

..In this report, we discuss the sporadic occurrence of these tumours, the histo-pathological features and the management strategy along with a review of the literature...

..The schwannoma was completely removed by a transmandibular transpterygoid approach with no major complications. This case is discussed with a review of the literature on this rare occurrence, focusing on the surgical approach...

..To evaluate the prevalence as well as the management of primary facial nerve schwannoma (PFNS) presenting as vestibular schwannoma...

..However, the histopathological findings reveal a chordoma. Bony destruction in the right petrous bone and clivus provides a hint to make appropriate diagnosis...

..During tumour resection facial nerve continuity should be maintained and reconstructed in one stage wherever possible. If this is not a viable option, second-stage surgery should be performed as soon as possible after surgery...

..This study was to explore MRI performances and features of schwannomas from cranial nerves in posterior cranial fossae...

..1H-MR spectroscopy was helpful in excluding an intra-axial neoplasm with exophytic growth, mainly due to the absence of creatine and N-acetyl aspartate peaks, and markedly elevated choline peak...

..The objective of this retrospective study was to analyze the management and outcome in a series of 23 cases collected at a single center...

..On histopathological examination, the masses were confirmed as schwannomas. The clinical presentation and probable histogenesis of schwannomas arising in this location are discussed together with a review of the literature...

..To investigate the capability of preoperative evaluations in predicting the precise anatomic origin of intracanalicular tumors...

..We report six cases of facial nerve schwannomas in which surgical management allowed the preservation of facial nerve function. Specifically, this paper reports that a stripping surgery may provide favorable functional outcomes...

..The patient expired from brainstem compression 7 years after initial radiotherapy. The long-term control of the original tumor despite positive margins argues for the use of radiotherapy in the treatment of these tumors...

..When the mastoid segment of the facial nerve is involved, irregular and "invasive" tumor margins seen on MR can be explained on CT as tumor breaking into surrounding mastoid air cells...

..Among these, only three were located in three distinct compartments, making this the rarest developmental pattern for trigeminal neurinomas...

..The symptom is conductive hearing loss caused by the tumor extending into the tympanic cavity. We should bear in mind that there is a also rare type of facial nerve schwannoma manifesting hearing disturbance alone...

..Careful consideration should be given to the indication of video-assisted thoracic surgery for neurogenic mediastinal tumors since postoperative dysfunction may occur...

..We present an algorithm for surgical management of trigeminal schwannomas based on our experience and information from the literature...

..The case highlights the importance of keeping a high degree of suspicion for metastatic tumours in patients with a previous history of malignancy and the usefulness of CT scan in the evaluation of such cases...

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..The Teflon-piston was repositioned with difficulties in the central platinotomy, and the facial schwannoma was left intact...

..The aim of this study was to report a series of 18 facial nerve schwannomas, including 2 infantile cases...

..Sympathetic plexus schwannomas are extremely rare and have never been noted within the cavernous sinus...

..Sarcoid of the trigeminal nerve is exceedingly rare and can mimic trigeminal schwannoma. We review the literature on sarcoid granulomas of the trigeminal nerve and compare their radiological features with the more common schwannoma...

..The whole lesion was resected, revealing to be a neurinoma on pathological exhamination. She maintained a VI nerve palsy but had complete remission of the unmotivated laughing episodes during the one year follow up...

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..Each segment of the facial nerve may be involved by differing pathology. In this report we break down the facial nerve into more easily understood divisions and cover the common pathology of each of these segments...

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..Following is this patient case report of multiple schwannomas presenting with no skin manifestations of neurofibromatosis...

..Radiotherapy was performed followed by complete thyroidectomy. Examination of the gross specimen found the tumor nodule. Clinically significant metastasis can arise from histologically benign and silent follicular thyroid neoplasms...

..We speculate that the tumour arose from the tentorial branch of the trigeminal nerve. The literature concerning intracranial schwannoma unrelated to a major cranial nerve is reviewed...

..The control rate of the 35 tumors was 91% (32/35). CONCLUSION: Small and middle-size trigeminal schwannomas are the best candidates for GK radiosurgery. The control dose is 13 to 14 Gy...

..To report a case of intracranial tumor in a patient with positive tensilon test...

..No recurrence of laughter and crying attacks were noted after total removal of the tumour. Theories of mechanism of pathological laughter and crying reported in the literature are reviewed...

..In particular, we want to analyse the influence of diagnostic techniques, such as magnetic resonance tomography and electrophysiology, on the diagnosis of these tumors...

..CONCLUSIONS: Aggressive attempt for total removal using skull base approach is recommended, especially for those having dominant posterior fossa component and for those having relatively narrow PW...

..Some surgical modalities regarding tumor removal as well as facial nerve repair are discussed...

..Therefore, radiosurgery should not be applied as the treatment of first choice for younger patients. A correct anatomical knowledge is critical for minimizing brain exposure and avoiding surgical complications...

..The tumor was resected via the transmandibular approach with an excellent outcome. The histologic examination with immunohistochemical staining yielded the diagnosis of neurofibroma...

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..We present a case of pseudotumor originating from the trigeminal nerve in a patient who presented with headache and facial numbness. A high index of suspicion is necessary to diagnose this benign but locally aggressive entity...

..The tumor arose from the right trigeminal ganglion in the middle cranial fossa, involving the 3 divisions of the trigeminal nerve. This affected the whole right side of the face. The principles of management are discussed...

..There is no known medical treatment beneficial to both groups of patients. The mainstay of care for Nf patients is anticipatory guidance, and early detection and symptomatic treatment of disease complications...

..It was enhanced heterogeneously with gadolinium. Cerebral angiography showed a mildly hypervascular lesion. Total removal of the tumor was performed by the left lateral suboccipital approach and the histological diagnosis was schwannoma...

..To examine long-term hearing outcomes after microsurgical excision of vestibular schwannoma (VS)...

..This study was aimed to examine the correlation between the results of subjective visual horizontal (SVH) and other vestibular function tests in patients with untreated unilateral vestibular schwannoma (VS)...

..We performed complete resection of the parapharyngeal tumor, by transcervical approach, with sacrificed the vagus nerve. The histopathological report showed a vagal paraganglioma. After one year is no sign of recurrence...

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..To validate the prognostic capacity of several preoperative and intraoperative parameters of hearing preservation after vestibular schwannoma surgery...

..Cranial nerve palsies has several etiologies including vascular insufficiency, neoplasm, trauma and inflammation. Isolated sixth nerve palsy is an extremely rare presenting feature of leukemia...

..This study analyzed the frequency of preoperative diagnosis, radiographic features, and importance of the preoperative diagnosis in treatment planning...

..We report one such patient. The tumor was approached via a modified frontotemporal craniotomy with orbitozygomatic osteotomy. It was completely extradural and could be totally excised with minimal morbidity...

..They are associated with a poorer surgical outcome in terms of facial preservation and overall result...

..A review of the literature and discussion of the respective benefits of microsurgery versus GKS and long-term follow-up issues are presented...

..This case report confirms the involvement of the cortico-ponto-cerebellar pathways in the pathogenesis of pathological crying...

..The aim of this study was to assess the incidence of balance problems after acoustic neuroma surgery, evaluating whether disequilibrium is disabling...

..The tumor was removed together with this communicating branch. Histopathologic examination revealed schwannoma. Facial nerve functions were normal after the operation, and no recurrence was encountered in a six-month follow-up...

..Overall, the UVD had only a minor influence on the symmetry of head, trunk and pelvis kinematics during fast yaw rotation of the head executed during standing and walking...

..Therefore, it is important to understand that neurofibroma of the auriculotemporal nerve can mimic temporal arteritis and manifest with trigeminal neuralgia-like pain...

..Complete excision would appear to be the treatment of choice, but conservative treatment is an option provided the tumour causes no serious symptoms...

..Deep lobe involvement and large tumor size may identify patients at risk of facial nerve involvement. Reanimation is associated with good functional outcome regardless of patient's age...

..Loss of hearing in the VS appears to be multifactorial. Determining the radiological parameters related to the hearing level can help to clarify the pathophysiological mechanisms involved...

..Describe the surgical systematization of the different variants of the middle fossa approach...

..Our case report underlined the depth of the neurotropic melanoma and the initial existence of a lentigo maligna without associated "neurotropic" melanoma...

..Vestibular schwannomas, neurogenetic syndromes such as schwannomatosis and multiple isolated neurofibromas, and malignant peripheral nerve sheath tumors are covered in this review...

..This case is the first to describe an intracranial inflammatory pseudotumor originating from a cranial nerve. The pathologic examination supported the postinfection hypothesis out of several possible pathologic mechanisms...

..B-scan sonography for the mouth floor and MRT imaging may be helpful in differential diagnosis. Here, we report on a patient with ancient schwannoma of the floor of the mouth...

..We hypothesize that such factors may further minimize injury of adjacent cranial nerves. In this retrospective study, we report our experience with staged radiosurgery for managing acoustic neuromas...

..CONCLUSION: Trigeminal schwannoma is a tumour that occurs rarely in childhood. Although several, often multistaged surgical strategies have been reported in the literature, this tumour was eradicated by a one-stage pterional approach...

..Cure entails a complete resection, all attempts being made to preserve the nerve of origin. Otherwise, immediate reconstruction and postoperative rehabilitation should be undertaken in the context of a multidisciplinary management team...

..Schwannomas with extension to the infratemporal fossa are rare. We review the anatomy of this region, the surgical approaches, which have been used and propose a different approach...

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..The immunohistochemical and ultrastructural profiles of the tumors suggest that neurofibromas and schwannomas are probably not distinct tumors but lie within a spectrum that differs histologically depending on the predominant cell type...