نتایج جستجو برای: acoustic schwannoma
تعداد نتایج: 90482 فیلتر نتایج به سال:
Among posterior fossa tumours, schwannomas arising from glossopharyngeal nerves are extremely rare, and only 39 cases of glossopharyngeal schwannomas have been described. The clinical and imaging features of glossopharyngeal schwannomas closely resemble that of acoustic schwannomas. Despite its accuracy, magnetic resonance imaging is not diagnostic of a ninth nerve schwannoma. This is because t...
INTRODUCTION Schwannoma arising from the glossopharyngeal nerve is a rare intracranial tumor. Fewer than 40 cases have been reported. Accurate pre-operative diagnosis and optimal treatment are still difficult. CASE PRESENTATION We present one case of schwannoma originating from the ninth cranial nerve with palsies of the trigeminal nerve, facial-acoustic nerve complex, and vagus nerve in addi...
A schwannoma, also known as an acoustic neuroma, is a benign nerve sheath tumor composed of schwann cells, which normally produce the insulating myelin sheath covering the peripheral nerves. Schwannoma, originating from the cervical vagus nerve, is an extremely rare neoplasm that usually occurs in men between the 3rd and 6th decades of life. The most common presentation is a painless, slow-grow...
Jugular foramen schwannoma is a very rare tumour and very few cases have been reported in the literature. Usually it is misdiagnosed as acoustic neuroma and the diagnosis is made peroperatively. It has significant neurological morbidity and mortality. In addition to the experience and expertise of the surgeon, introduction of better anaesthesia and microsurgical techniques have significantly re...
Refinement of surgical techniques has allowed hearing preservation after tumor resection to be prioritized. Moreover, restoration of hearing after tumor removal can be attempted in patients with bilateral vestibular schwannomas or those with a schwannoma in the only-hearing ear. Cochlear implantation (CI) has emerged as a proper method of acoustic rehabilitation, provided that the cochlear nerv...
Schwannomas are tumors derived from the Schwann cells, which form the myelin sheath of the peripheral nerves. Fewer than 1% of these tumors occur within the brain parenchyma without arising from the cranial nerves. Only 55 cases have been published after the first recorded case. We report a 17-year-old girl with a 3-month history of unspecific dizziness, unsteadiness, and headache. Magnetic res...
OBJECTIVES To study the spectrum of diseases that can be detected by magnetic resonance imaging in patients suspected to have vestibular schwannoma (acoustic neuroma) presenting with sensorineural or mixed hearing loss, and to assess the extent of the problem of hearing loss in a screened population. DESIGN Retrospective study. SETTING Diagnostic radiology and imaging department of a region...
Vestibular schwannoma is the most common tumor of the posterior fossa of the skull. Patients referred with the primary otologic symptoms such as hearing loss, tinnitus, vertigo, imbalance, and the cranial nerve palsy. Thirty-three patients were operated and treated by a team of otolaryngologist and neurosurgeon, anudiometrist, and internist. Patients'chiefcomplaint was due to 94% hearing loss a...
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