1/9. Influence of otitis media on hearing and development.otitis media affects nearly every child at some time; many children have mild-to-moderate hearing losses for prolonged periods. The effects of these losses on language and educational development may be significant; possible mechanisms are discussed. Especially in suboptimal listening situations, speech perception may be impaired by even a mild hearing loss. Patterns of imperception are predicted by comparison of composite audiometric data from children with middle ear effusions with speech power data, and by analysis of sound pressure waveforms of speech filtered to simulate the typical hearing loss of these patients. A new method of analysis of brain stem evoked responses, yielding response components attributable to binaural interaction, is reported. This and other evoked response techniques may be able to identify objective changes in auditory nervous system function attributable to relative sensory deprivation during development. Finally, directions for further research in this area are discussed.- - - - - - - - - - ranking = 1keywords = nervous system (Clic here for more details about this article) |
2/9. radiation-induced schwannomas of the nervous system. Report of five cases and review of the literature.radiation therapy has important delayed effects on the central nervous system. Prominent among these effects is radiation necrosis of nervous tissue, but an oncogenic effect is also recognized. Both benign and malignant intracranial tumors can develop in irradiated fields, particularly in children. Most of these tumors are sarcomas, meningiomas or gliomas and only occasionally schwannomas. We report 5 cases of postirradiation acoustic nerve schwannoma observed in our Department.- - - - - - - - - - ranking = 7.3200385720341keywords = central nervous system, nervous system (Clic here for more details about this article) |
3/9. tinnitus in childhood.All of 1,420 children seen for clarification of a hearing disorder or to follow up for known difficulty in hearing were questioned as to whether they experienced tinnitus. The interview was carried out after a hearing test was conducted, which was based on play audiometry or normal pure-tone threshold audiometry, depending on the age of the child. When being interviewed, 102 children reported that tinnitus had appeared or was still present. Seventy-five children (73.5%) demonstrated difficulty in hearing in one or both ears, whereas 27 children (26.5%) had normal hearing in both ears. The most frequently obtained information (29.4%) was the progression of an existing hearing loss. meningitis is an important cause of hearing loss and of tinnitus and could be identified in 20% of our patients. We also considered as a cause of tinnitus skull or brain trauma, acute hearing loss, and stapes surgery. However, the mechanisms of tinnitus development were not immediately clear in a large proportion of the children studied: Problems included central sensory perception (14.7%) and emotional factors (11.8%). No additional information that might lead to an understanding of the hearing loss was available for 14.7% of the patients studied. tinnitus is a frequent symptom in childhood and, because children seldom complain about their tinnitus, such hearing problems that they report must always be taken seriously. The diagnosis should exclude metabolic disturbances, possible damage to the sensory level of the central nervous system, and circulatory disturbances. In addition, the physician should always consider emotional problems and disturbances of perception.- - - - - - - - - - ranking = 3.3200385720341keywords = central nervous system, nervous system (Clic here for more details about this article) |
4/9. Isolated monolateral neurosensory hearing loss as a rare sign of neuroborreliosis.lyme disease, or borreliosis, is a zoonosis transmitted by borrelia burgdorferi which also involves the central nervous system (CNS), in 15% of affected individuals, with the occurrence of aseptic meningitis, fluctuating meningoencephalitis, or neuropathy of cranial and peripheral nerves. Encephalopathy with white matter lesions revealed by magnetic resonance imaging (MRI) scans in late, persistent stages of lyme disease has been described. In this report, we describe a patient with few clinical manifestations involving exclusively the eighth cranial nerve, monolaterally and diffuse bilateral alterations of the white matter, particularly in the subcortical periventricular regions at cerebral MRI. This single patient study shows that the search for antibodies against Borrelia burgdoferi should always be performed when we face a leukoencephalopathy of unknown origin. An isolated lesion of the eighth cranial nerve can be the only neurologic sign in patients with leukoencephalopathy complicating lyme disease.- - - - - - - - - - ranking = 3.3200385720341keywords = central nervous system, nervous system (Clic here for more details about this article) |
5/9. Giant cranial extradural primary fibroxanthoma: a case report.Primary fibroxanthoma of the cranium is an extremely rare condition. Xanthomatous tumors of the central nervous system are occasionally associated with diseases such as hand-Schuler-Christian disease, malignant fibrous histiocytoma, hyperlipidemia, and a complication of metabolic or storage disorders. However, until 2003, only a few cases of primary fibroxanthoma have been reported. We report a giant fibroxanthoma destroying the lateral skull base unaccompanied by a systemic or metabolic disease.- - - - - - - - - - ranking = 3.3200385720341keywords = central nervous system, nervous system (Clic here for more details about this article) |
6/9. Cerebellar degeneration and hearing loss in a patient with idiopathic myenteric ganglionitis.A 35-year-old male with an 11-year history of intestinal pseudo-obstruction associated with an idiopathic inflammatory insult of the myenteric plexus and the presence of circulating anti-Hu antibodies developed a neurological syndrome characterized by bilateral hearing loss, deteriorating balance, an unsteady gait and difficulty in estimating distances. A similar neurological syndrome has previously been described in older patients among the paraneoplasic syndromes associated with small-cell lung carcinoma and the presence of circulating anti-Hu antibodies, but never in the rare cancer-free patients with anti-Hu-associated chronic idiopathic intestinal pseudo-obstruction. The patient underwent a steroid treatment. No further episodes of functional intestinal obstruction were observed and, after an initial improvement, the neurological symptoms stabilized, leaving a permanent reduction in hearing function and an unsteady gait. The case shows that an idiopathic inflammatory insult of the myenteric plexus may precede (and perhaps lead to) central nervous system impairment in patients with anti-Hu-associated chronic idiopathic intestinal pseudo-obstruction.- - - - - - - - - - ranking = 3.3200385720341keywords = central nervous system, nervous system (Clic here for more details about this article) |
7/9. Cerebral amyloidoma diagnosed intraoperatively with squash preparations: a case report.BACKGROUND: Amyloidoma (tumoral amyloidosis) is the rarest form of central nervous system (CNS) amyloidosis. CASE: A 51-year-old woman presented with recurrent right-sided otitis media and hearing loss. Computed tomography and magnetic resonance imaging revealed a mass in the right temporal lobe. Cytologic findings at the time of stereotactic biopsy for suspected glioma were compatible with amyloidoma. Subsequent histologic and electron microscopic findings confirmed the diagnosis of amyloidoma. Auxiliary testing ruled out systemic amyloidosis and plasma cell dyscrasia. CONCLUSION: To our knowledge, this is the first report on the cytologic findings in a case of CNS amyloidoma.- - - - - - - - - - ranking = 3.3200385720341keywords = central nervous system, nervous system (Clic here for more details about this article) |
8/9. Calcification of the central nervous system in a new hereditary neurological syndrome.A case of a new hereditary neurological condition with extensive calcifications of the central nervous system is described. The calcium deposits were especially localized to the leptomeninges, the first layer of the cerebral and cerebellar cortex, and along the ventricular wall. The neuropathological findings were in accordance with the clinic. The case was familial and the pedigree suggested an X-linked recessive inheritance.- - - - - - - - - - ranking = 16.60019286017keywords = central nervous system, nervous system (Clic here for more details about this article) |
9/9. Auditory disorder in central nervous system miliary tuberculosis: case report.We evaluated a 28-year-old female with a unilateral hearing loss of unusual pathogenesis, that of central nervous system miliary tuberculosis. Audiologic and otologic findings were consistent with left retrocochlear disorder, characterized by a profound hearing sensitivity loss, absent acoustic reflexes, normal otoacoustic emissions, and the presence of only wave I of the auditory brainstem response. Imaging studies revealed the presence of multiple punctate lesions, one of which was extra-axial and located at the left cerebellopontine angle. The pattern of audiometric test results, particularly the combination of normal otoacoustic emissions and profound hearing sensitivity loss, contributed importantly to the investigative sequence leading to the final diagnosis.- - - - - - - - - - ranking = 16.60019286017keywords = central nervous system, nervous system (Clic here for more details about this article) |