نتایج جستجو برای: retrosigmoid approach
تعداد نتایج: 1289918 فیلتر نتایج به سال:
We report a case of 25-year-old man presenting with a 2-year history of decreased hearing and tinnitus on the right side. Neurological examination revealed profound right retrocochlear sensorineural hearing abnormality, mild right facial spasm and positive Romberg sign. Magnetic resonance imaging (MRI) revealed a giant lesion, hypointense on T1-weighted image and hyperintense on T2-weighted ima...
Intracranial squamous cell carcinoma is extremely rare, with most of the cases arising from malignant transformation of an epidermoid or a dermoid cyst. The patient presented with facial weakness. Initial magnetic resonance imaging revealed a mass in the right cerebellopontine angle. A subtotal resection was performed via right retrosigmoid suboccipital approach. Histopathological findings were...
Here we reported the first case of left cerebellopontine angle acoustic neurinoma with calcification in our department. The patient was 65 year-old, suffering from progressive loss of hearing in the left ear for about 30 years and headache with unsteady gait for approximately 6 months. Head CT & MRI scan identified an intracranial lesion located on left cerebellopontine angle. Left suboccipital...
included computed tomography (CT), magnetic resonance imaging (MRI) (Figure 1A and B), and cerebrospinal fluid analysis. Medical treatment for trigeminal neuralgia was started, however this proved to be unsuccessful. His pain worsened, and repeat MRI showed an enlarged, non-enhancing lesion at the root entry zone of the trigeminal nerve (Figure 1C). A neoplastic etiology was suspected, and the ...
BACKGROUND While the published rates of cerebrospinal fluid (CSF) leak following acoustic neuroma resection varies, it remains a known complication. It is unclear if tumor size and surgical approach affect the risk of CSF leak postoperatively. Meticulous surgical technique during middle fossa, retrosigmoid, and translabyrinthine approaches, along with judicious use of perioperative lumbar drain...
Long-term hearing was examined in 200 patients operated on during 1976-2000 with removal of acoustic neuroma with a retrosigmoid approach and hearing preservation technique. Ninety-four cases preserved hearing, and 91 cases were followed-up for at least 6 years (range 6 to 21 years). Hearing was measured with the PTA 0.5 KHz to 4 KHz and the SDS, and followed the guidelines of the American Acad...
BACKGROUND Facial function is important in accompaniment of patients operated on vestibular schwannoma (VS). OBJECTIVE To evaluate long term facial nerve function in patients undergoing VS resection and to correlate tumor size and facial function in a long-term follow-up. METHOD Transversal study of 20 patients with VS operated by the retrosigmoid approach. House-Brackmann Scale was used pr...
OBJECTIVE To review the demographic trends clinical spectrum, diagnosis, management and out come of patients with vestibular Schwannoma and to identify areas where improvements are needed. METHODS All patients with vestibular schwannoma admitted to the Aga Khan University Hospital over the past 11 years were reviewed retrospectively. RESULTS The age range of majority of 22 patients analyzed...
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