Search Results
Results 551 - 600 of 892
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Das D - - 1999
A patient presented with retroperitoneal fibrosis but without any ureteric obstruction. The diagnosis was made by an abdominal CT scan and also at laparotomy. Post-operatively, she developed hypertensive encephalopathy. An isotope renogram with captopril was abnormal but not diagnostic of renal artery stenosis. The patient's condition improved with steroid and ...
Suwa K - - 1999
A 4-year-old boy showed two episodes of encephalitis/encephalopathy involving disturbed consciousness, convulsion, and paresis associated with the elevated levels of protein and myelin basic protein of the cerebrospinal fluid. MRI studies of the brain revealed symmetrical lesions in the brain stem and thalami at the first episode, and additional lesions ...
Chen C J - - 1999
We report serial changes of central structure preservation of the reversal sign in a case of child abuse. The serial CT images show that the relatively spared attenuation at the basal ganglia, thalami, and posterior fossa develops before the occurrence of transtentorial herniation. This finding makes the theory that central ...
Ducoté J M - - 1999
A necrotizing meningoencephalitis of Yorkshire terriers has recently been reported in 6 dogs in Switzerland, 1 dog in Japan and 1 dog in the United States. The purpose of this report is to describe the computed tomographic (CT) findings in 3 dogs with this disease, and to correlate the CT ...
Nakashima A - - 1999
We studied the CT and MR images of a patient with Japanese encephalitis. The first symptom was general malaise with high fever. The diagnosis of meningoencephalitis was made by spinal tap and clinical presentation. CT on the third day of illness showed no significant findings. MRI on the fifth day ...
Dowling M M - - 1999
A 12-month-old boy with acute onset hemichorea and dystonia following a gastroenteritis has abnormal signal intensities of his basal ganglia on brain magnetic resonance imaging (MRI). A rigorous laboratory investigation is successful in diagnosing his rare condition. A discussion of the differential of abnormal basal ganglia on MRI is presented ...
Bobele G B - - 1999
A 5-year-old boy presented with an acute ataxia and altered mental status. Although he initially recovered from these symptoms, he presented a second time with myoclonus and seizures and rapidly became vegetative. Cerebrospinal fluid studies, magnetic resonance imaging, and brain biopsy all confirmed the presence of subacute sclerosing panencephalitis. Despite ...
Meyding-Lamadé U - - 1999
Cranial magnetic resonance imaging (MRI) is a sensitive diagnostic tool for the in vivo detection of morphological abnormalities in herpes simplex virus encephalitis (HSVE). We performed a long-term MRI study in a mouse model of HSVE. Cranial MRI findings were compared with the viral load within brain tissue, the presence ...
Cerna F - - 1999
Neuroimaging findings in cases of St. Louis encephalitis (StLE) have yet to be reported despite the relatively high frequency of this entity. An epidemic permitted the documentation of isolated hyperintensity of the substantia nigra on T2-weighted images in two patients with StLE. This distribution of MR imaging abnormality in cases ...
Hager A - - 1999
Hemolytic-uremic syndrome is a microangiopathy often associated with neurologic symptoms. Several patients with persistent lesions in cerebrum and basal ganglia have been reported. We present two children with bilateral basal ganglia and additional unilateral cerebellar lesions in magnetic resonance imaging. These resolved completely in one child. In the other child ...
Al-Essa M - - 1999
The clinical data and the imaging findings of the positron emission tomography (PET) and the magnetic resonance imaging (MRI) studies in five patients, previously diagnosed to have propionic acidemia, were retrospectively reviewed. The patients were all normal at birth. The first clinical signs, typically hypotonia and failure to thrive, appeared ...
Shibata M - - 1999
We described an 11-year-old girl with acute central nervous system lupus showing diffuse lesions. She developed generalized convulsions followed by prolonged coma, and her psychomotor ability recovered fully after 3 months of steroid therapy. Cranial magnetic resonance imaging (MRI) showed high signal intensity in the cerebral deep white matter, bilateral ...
Ikeda S - - 1999
An 8-year-old Japanese girl with a portosystemic shunt had shown hyperammonaemia since she was 3 years of age. MRI of her brain showed bilateral hyperintense globus pallidus. A portosystemic shunt was evident on US and angiography. She underwent surgical banding of the shunt, after which the lesion and clinical symptoms ...
Kalita J - - 1999
Japanese encephalitis (JE) is associated with varying degrees of coma and brainstem involvement is frequent which can be evaluated and monitored by brainstem auditory evoked potential (BAEP). The present study has been undertaken to evaluate the BAEP changes and their role in predicting the outcome. Twelve adult patients with JE ...
Gruber Gikovate C - - 1999
We report a child who concurrently developed polycythaemia, dystonia, and T1 shortening in the globus pallidus, medial cerebral peduncle and superior cerebellar peduncles on MRI. With spontaneous resolution of the polycythaemia after about 2 1/2 years, the dystonia and MRI abnormalities also resolved. Although the physiological cause of the T1 ...
Inatomi Y - - 1999
We described a patient with encephalopathy associated with visceral larva migrans (VLM) caused by Ascaris suum. He suffered from drowsiness, quadriparesis, eosinophilia and elevated serum IgE levels. Brain magnetic resonance (MR) imaging revealed multiple cerebral cortical and white matter lesions. Serological tests indicated recent infection with A. suum. Pulse steroid ...
Thajeb P - - 1999
The authors report a 61-year-old man with chronic viral encephalitis and Koshevnikov syndrome occurring 42 months after initial symptom of right hemiparesis. Serial computed tomography of the brain showed changes in the attenuation of the left temporal lobe lesion over time. Magnetic resonance images of the brain showed enlargement of ...
Pal P K - - 1999
Manganese intoxication can result in a syndrome of parkinsonism and dystonia. If these extrapyramidal findings are present, they are likely to be irreversible and even progress after termination of the exposure to manganese. Clinical features are usually sufficient to distinguish these patients from those with Parkinson's disease. The neurological syndrome ...
Free T - - 1999
A 90-year-old male experienced the abrupt onset of hemiballismus. He had an unusual MRI picture with bright signal in the right basal ganglia on T1-weighted imaging with no significant signal abnormality identified on T2-weighted imaging. This appearance has been described in diabetic patients who sustain ischemia in the basal ganglia ...
Komaki H - - 1999
Tremor and seizures developed in a 2-year-old girl receiving total parenteral nutrition. T1-weighted images on MRI revealed areas of hyperintensity in the basal ganglia, brainstem and cerebellum. Blood manganese was elevated. The symptoms and MRI abnormalities disappeared after withdrawal of manganese administration. The recommendation of daily parenteral manganese intake was ...
Schoser B G - - 1999
A case is reported of a patient who experienced sudden onset of severe respiratory failure, shock and coma after first-time intranasal heroin abuse. During the following days full consciousness was restored, revealing persistent oculogyric crises, axial retropulsive dystonia and ataxia. Initially computer tomography (CT) scans of the brain were normal ...
Sakai K - - 1999
Serial changes of neuroradiological findings in a 10-year-old boy with primary germinoma originating in the basal ganglia are reported. He presented with a one year history of slowly progressive right hemiparesis. Although initial computed tomography (CT) scans showed no prominent abnormalities, a slight high-density area in the basal ganglia became ...
Antunes N L - - 1999
The association of an acute reversible encephalopathy with transient occipital lobe abnormalities on imaging studies is well known. This condition has been called reversible posterior leukoencephalopathy syndrome. The clinical presentation usually includes seizures, headache, altered mental status, and blindness, often associated with hypertension and immunosuppressants. The authors discuss a two-year-old ...
Takao M - - 1999
We analyzed the pathologic features of silent, small hyperintense foci in the basal ganglia and thalamus on MRI T2-weighted images (T2WI). Eight foci were histologically lacunar infarcts (LI), and 21 were dilated perivascular spaces (DPS). The foci with smooth margins were mostly DPS, whereas those with irregular margins were mostly ...
Schils F - - 1999
Unilateral low attenuation areas within the right putamen, globus pallidus and thalamus were observed on CT in a patient after exposure to carbon monoxide. A transient bilateral appearance was found on subsequent CT examinations. Hemorrhagic infarction of the right putamen, and ischemic lesions in both thalami were visualized on MRI ...
AlOrainy I A - - 1999
The neuroimaging findings in an infant with hypernatremic dehydration are presented. Brain parenchymal haemorrhage and extensive multiple infarcts were present in the acute stage. Follow-up CT showed bilateral, symmetrical changes presumed to indicate extrapontine myelinolysis in the thalamus and globus pallidus. MRI confirmed sparing of the pons. Only three previous ...
Keller R - - 1999
We describe a case of Wilson's disease with late psychiatric onset. Major depressive disorder was the first clinical manifestation at the age of 38 years. After pharmacotherapy with antidepressive agents, a manic episode was observed. Extrapyramidal hand tremor and micrography were the first neurological signs. Emotional lability occurred during worsening ...
Cho S G - - 1999
We report a case of reversible encephalopathy syndrome in a 16-year-old girl with acute myelogenous leukemia (AML), who is undergoing during consolidation chemotherapy composed of BH-AC (N4-behenoyl-1-beta-D-arabinofuranosyl cytosine) and idarubicin. On the 6th day of chemotherapy, she was in a drowsy state following generalized tonic clonic seizure lasting 20 minutes. ...
Ashraf V S - - 1999
We observed that the fetal brain demonstrates relatively increased echogenicity of the basal ganglia compared with the thalami and cortical brain parenchyma, which we did not observe on neonatal sonograms. We hypothesized that the difference in relative echogenicity was due to differences in imaging techniques and anisotropic effects for prenatal ...
Forstner R - - 1999
BACKGROUND: Glutaric aciduria type I (GA-I) is a rare inherited metabolic disease with increased excretion of glutaric acid and its metabolites. Diagnosis is often delayed until the onset of irreversible neurological deficits. MATERIAL AND METHODS: We reviewed the clinical and imaging (US, CT and MRI) findings in six patients with ...
Sharfstein S R - - 1999
OBJECTIVE: To report an unusual presentation of mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) manifested in late life with a clinical picture of herpes simplex encephalitis. DESIGN: Case report. SETTING: Clinical neurology department in a tertiary care hospital. CASE DESCRIPTION: A 55-year-old woman developed aphasia and delirium during ophthalmic ...
Opdenakker G - - 1999
Wernicke encephalopathy is a serious neurologic disorder caused by vitamin-B1 or thiamine deficiency. In the literature the characteristic symmetric paraventricular lesions of Wernicke encephalopathy are hyperintense on T2-weighted sequences spin-echo (SE) and enhance on T1-weighted SE sequences after intravenous gadolinium administration in the acute phase. We present two patients in ...
al-Essa M A - - 1999
We report a 2-year-old boy with ethylmalonic aciduria and vasculopathy syndrome evaluated by 18fluoro-2-deoxyglucose positron emission tomographic (18FDG PET) brain scan, with intense uptake of 18FDG in the caudate nucleus and putamen bilaterally but with no morphological changes on magnetic resonance imaging (MRI). A repeat 18FDG PET brain scan 1 ...
Hartfield D S - - 1999
Severe hypernatremia has been associated with a wide variety of central nervous system lesions. Neurologic sequelae are the usual outcome in those cases in which a lesion has been documented neuroradiologically. The authors report a 7-month-old male with severe hypernatremia who developed obtundation after correction of the electrolyte imbalance. Magnetic ...
Tajima Y - - 1999
Two young women who had encephalopathy that resembled reversible posterior leukoencephalopathy syndrome are presented. The brain magnetic resonance imaging (MRI) of these patients exhibited similar T2-high signal lesions, mostly in the white matter of the posterior hemispheres. Xe-SPECT during the patients' symptomatic period showed hypoperfusion in the corresponding areas, and ...
Nagatomo S - - 1999
We report two cases of manganese (Mn) intoxication during total parenteral nutrition including manganese (Mn). Both patients showed parkinsonism with psychiatric symptoms and elevated serum Mn levels. T1-weighted magnetic resonance images (MRI) revealed symmetrical high intensity lesions in the globus pallidus. Discontinuation of Mn supplementation and levodopa treatment improved the ...
Layrargues G P - - 1998
Amongst the potential neurotoxins implicated in the pathogenesis of hepatic encephalopathy, manganese emerges as a new candidate. In patients with chronic liver diseases, manganese accumulates in blood and brain leading to pallidal signal hyperintensity on T1-weighted Magnetic Resonance (MR) Imaging. Direct measurements in globus pallidus obtained at autopsy from cirrhotic ...
Wetzburger C L - - 1998
Trichothiodystrophy was diagnosed in a 3-year-old male presenting with speech delay, brittle hair, chronic neutropenia, and a history of febrile convulsions. Cranial magnetic resonance imaging revealed a focal subcortical and periventricular gray matter heterotopia. An acute encephalopathy with status epilepticus and coma occurred when he was 4 years of age ...
Antunez E - - 1998
OBJECTIVE: In this study, we analyzed the sensitivity and specificity of CT and MR imaging in the diagnosis of acute Wernicke's's encephalopathy. SUBJECTS AND METHODS: Three groups of subjects were studied: 15 patients with acute Wernicke's encephalopathy; 15 asymptomatic alcoholics; and 15 control subjects. Studies included clinical and laboratory examinations ...
Cakmakçi H - - 1998
The magnetic resonance imaging (MRI) findings in 14 patients with biopsy or polymerase chain reaction proven herpes simplex encephalitis were retrospectively reviewed to evaluate the diagnostic value of MRI in the early diagnosis of herpes simplex encephalitis in children. In addition to the early findings, follow-up MRI scans were obtained ...
Dubowitz D J - - 1998
BACKGROUND AND PURPOSE: Quantitative MR spectroscopy has a proved role in the investigation of hypoxia caused by near drowning. To date, no studies have addressed the MR imaging changes that may also accompany this condition. The purpose of this study was to describe the MR imaging findings in children with ...
Haseler L J - - 1998
BACKGROUND AND PURPOSE: Eosinophilia myalgia syndrome (EMS), a multisystemic disease induced by exposure to L-tryptophan, may result in serious CNS abnormalities. The purpose of this study was to determine the pattern of neurologic characteristics, MR imaging abnormalities, and brain neurometabolites in EMS. METHODS: Sixteen patients with EMS and CNS abnormalities ...
Kidney D D - - 1998
The purpose of this report is to describe the clinical history, treatment, pathology, and imaging in two cases of rare CNS infection caused by free-living amebas. The Naegleria fowleri and Acanthamoeba species cause primary amebic meningoencephalitis and granulomatous amebic encephalitis, respectively. We describe the neuroimaging findings of a case involving ...
Messa C - - 1998
Functional imaging of the presynaptic dopaminergic activity using single-photon emission tomography (SPET) and iodine-123 labelled 2-beta-carboxymethoxy-3-beta-(4-iodophenyl)tropane ([123I]beta-CIT) is important for the assessment of disease severity and progression in patients with Parkinson's disease (PD). However, its capability to discriminate between different extrapyramidal disorders has not yet been assessed. The aim of ...
Bhatjiwale M G - - 1998
Rasmussen's encephalitis usually presents in childhood. The clinical picture in Rasmussen's disease is protean, and the findings from direct brain imaging help to explain the variations seen in this syndrome. The role and involvement of the basal ganglia in this condition is clarified by comparing the changes seen on computerised ...
Salvesen R - - 1998
Extrapontine myelinolysis is a rare and serious disorder characterized by patches of demyelination in certain areas of the brain. Common sites of involvement are the basal ganglia and the thalamus. The patient most often presents with behavioural abnormalities, including mutism, and extrapyramidal symptoms and signs. The diagnosis is established by ...
Nagaratnam N - - 1998
The imaging appearances of a case of extensive intracranial calcification presenting with dyspraxic gait are described. Computed tomography showed bilateral calcification in the anterior, posterior and central watershed areas and in the basal ganglia. It is believed that the changes are secondary to previous hypoxaemia and hypotension, and that subsequent ...
Abe K - - 1998
Destructive lesions of the basal forebrain are often associated with memory impairment and this structure is thought to contribute to memory function by providing a cholinergic input to critical structures associated with memory such as the hippocampus and amygdala. In previously reported cases of amnesia associated with damage in the ...
Abe T - - 1998
Japanese encephalitis (JE) is an acute encephalomyelitis which is a primary viral encephalitis accompanying a viral infection. Clinically, the patient who either resides in an endemic region or who has been exposed to the viral vector (mosquito) may have symptoms including high fever, headache, and impaired consciousness. JE involves many ...
Woolfenden A R - - 1998
A 10-year-old boy with Henoch-Schönlein purpura complicated by encephalopathy, transient cortical blindness, and a secondary generalized seizure is reported. Reversible changes in the posterior white and gray matter were seen on magnetic resonance imaging. Our patient illustrates uncommon neurologic manifestations of Henoch-Schönlein purpura. The nature and location of the lesions ...
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