RESUMEN
BACKGROUND AND PURPOSE: To define cystic patterns resulting from term hypoxic ischemic injury (HII) on delayed Magnetic Resonance Imaging (MRI) and determine associated HII patterns and lesions that reflect the severity of injury, from a database of African children with cerebral palsy. METHODS: Retrospective review of 1175 children with cerebral palsy due to term HII diagnosed on late MRI, identifying those with cystic changes. These were classified as multicystic or (multi-) focal-cystic, and were evaluated for associated injuries-thalami, basal ganglia, hippocampi, cerebellum, and presence of ulegyria. RESULTS: Three hundred and eighty-eight of 1175 (33%) children had cystic encephalomalacia. Two hundred and seven of 388 (53.3%) had focal-cystic and 181/388 (46.6%) had multicystic injury. The focal-cystic group comprised 87.9% (182/207) with thalamic injury, 25.6% (53/207) with basal ganglia injury, and 15% (31/207) with cerebellar involvement. Basal-ganglia-thalamus (BGT) pattern was present in 43.9% (91/207) and ulegyria in 69.6% (144/207). In the multicystic group, 88.9% (161/181) had thalamic injury, 30.9% (56/181) had basal ganglia injury, and 21% (38/181) had cerebellar involvement. BGT pattern was observed in 29.8% (54/181) and ulegyria in 28.7%. (52/181). Significant associations (p<.05) were found between multicystic injury and caudate/globus pallidus involvement, and between focal-cystic pattern of injury and ulegyria. CONCLUSIONS: Cystic encephalomalacia was seen in almost one-third of patients with term HII imaged with delayed MRI, with a similar prevalence of focal-cystic and multicystic injury. Multicystic injury was associated with caudate and globus pallidi involvement, typical of the BGT pattern of HII, whereas the focal-cystic pattern was associated with ulegyria, typical of watershed injury.
Asunto(s)
Encefalomalacia , Hipoxia-Isquemia Encefálica , Imagen por Resonancia Magnética , Humanos , Femenino , Masculino , Imagen por Resonancia Magnética/métodos , Hipoxia-Isquemia Encefálica/diagnóstico por imagen , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/etiología , Diagnóstico Diferencial , Parálisis Cerebral/diagnóstico por imagen , Lactante , Recién Nacido , Preescolar , Estudios Retrospectivos , Niño , Sensibilidad y Especificidad , Reproducibilidad de los ResultadosRESUMEN
This study introduced new MRI techniques such as neurite orientation dispersion and density imaging (NODDI); NODDI applies a three-compartment tissue model to multishell DWI data that allows the examination of both the intra- and extracellular properties of white matter tissue. This, in turn, enables us to distinguish the two key aspects of axonal pathology-the packing density of axons in the white matter and the spatial organization of axons (orientation dispersion (OD)). NODDI is used to detect possible abnormalities of posttraumatic encephalomalacia fluid-attenuated inversion recovery (FLAIR) hyperintense lesions in neurite density and dispersion. Methods. 26 epilepsy patients associated with FLAIR hyperintensity around the trauma encephalomalacia region were in the epilepsy group. 18 posttraumatic patients with a FLAIR hyperintense encephalomalacia region were in the nonepilepsy group. Neurite density and dispersion affection in FLAIR hyperintense lesions around encephalomalacia were measured by NODDI using intracellular volume fraction (ICVF), and we compare these findings with conventional diffusion MRI parameters, namely, fractional anisotropy (FA) and apparent diffusion coefficient (ADC). Differences were compared between the epilepsy and nonepilepsy groups, as well as in the FLAIR hyperintense part and in the FLAIR hypointense part to try to find neurite density and dispersion differences in these parts. Results. ICVF of FLAIR hyperintense lesions in the epilepsy group was significantly higher than that in the nonepilepsy group (P < 0.001). ICVF reveals more information of FLAIR(+) and FLAIR(-) parts of encephalomalacia than OD and FA and ADC. Conclusion. The FLAIR hyperintense part around encephalomalacia in the epilepsy group showed higher ICVF, indicating that this part may have more neurite density and dispersion and may be contributing to epilepsy. NODDI indicated high neurite density with the intensity of myelin in the FLAIR hyperintense lesion. Therefore, NODDI likely shows that neurite density may be a more sensitive marker of pathology than FA.
Asunto(s)
Lesiones Traumáticas del Encéfalo/diagnóstico por imagen , Encefalomalacia/diagnóstico por imagen , Epilepsia/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Adulto , Lesiones Traumáticas del Encéfalo/complicaciones , Lesiones Traumáticas del Encéfalo/metabolismo , Encefalomalacia/etiología , Encefalomalacia/metabolismo , Epilepsia/etiología , Epilepsia/metabolismo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Sustancia Blanca/diagnóstico por imagen , Sustancia Blanca/metabolismoAsunto(s)
Astrocitoma/terapia , Neoplasias Encefálicas/terapia , Enfermedades del Nervio Oculomotor/diagnóstico , Traumatismos por Radiación/diagnóstico , Encefalomalacia/diagnóstico por imagen , Femenino , Lóbulo Frontal/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética , Persona de Mediana Edad , Procedimientos Neuroquirúrgicos , Enfermedades del Nervio Oculomotor/diagnóstico por imagen , Enfermedades del Nervio Oculomotor/etiología , Traumatismos por Radiación/diagnóstico por imagen , Traumatismos por Radiación/etiología , Radioterapia/efectos adversos , Factores de TiempoRESUMEN
BACKGROUND: Cerebral folate deficiency (CFD) is a neurological disease, hallmarked by remarkable low concentrations of 5-methyltetrahydrofolic acid (5-MTHF) in cerebrospinal fluid (CSF). The primary causes of CFD include the presence of folate receptor (FR) autoantibodies, defects of FR encoding gene FOLR1, mitochondrial diseases and congenital abnormalities in folate metabolism. CASE PRESENTATION: Here we first present a Chinese male CFD patient whose seizure onset at 2 years old with convulsive status epilepticus. Magnetic Resonance Imaging (MRI) revealed the development of encephalomalacia, laminar necrosis in multiple lobes of the brain and cerebellar atrophy. Whole Exome Sequencing (WES) uncovered a homozygous missense variant of c.524G > T (p.C175F) in FOLR1 gene. Further laboratory tests demonstrated the extremely low level of 5-MTHF in the CSF from this patient, which was attributed to cerebral folate transport deficiency. Following the intravenous and oral treatment of calcium folinate, the concentrations of 5-MTHF in CSF were recovered to the normal range and seizure symptoms were relieved as well. CONCLUSIONS: One novel variation of FOLR1 was firstly identified from a Chinese male patient with tonic-clonic seizures, developmental delay, and ataxia. The WES and laboratory results elucidated the etiology of the symptoms. Clinical outcomes were improved by early diagnosis and proper treatment.
Asunto(s)
Encefalomalacia/genética , Receptor 1 de Folato/genética , Deficiencia de Ácido Fólico/genética , Convulsiones/genética , Estado Epiléptico/genética , Edad de Inicio , Corteza Cerebral/diagnóstico por imagen , Corteza Cerebral/metabolismo , Corteza Cerebral/patología , Niño , Encefalomalacia/líquido cefalorraquídeo , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/tratamiento farmacológico , Receptor 1 de Folato/deficiencia , Deficiencia de Ácido Fólico/líquido cefalorraquídeo , Deficiencia de Ácido Fólico/diagnóstico por imagen , Deficiencia de Ácido Fólico/tratamiento farmacológico , Homocigoto , Humanos , Leucovorina/uso terapéutico , Imagen por Resonancia Magnética , Masculino , Convulsiones/líquido cefalorraquídeo , Convulsiones/diagnóstico por imagen , Convulsiones/tratamiento farmacológico , Estado Epiléptico/líquido cefalorraquídeo , Estado Epiléptico/diagnóstico por imagen , Estado Epiléptico/tratamiento farmacológico , Tetrahidrofolatos/líquido cefalorraquídeo , Secuenciación del ExomaRESUMEN
OBJECTIVE: To assess the prevalence of brain MRI abnormalities in people with epilepsy in rural China and to compare it with that of individuals in the United Kingdom. METHODS: Brain MRI scans were obtained in people with epilepsy who participated in a rural community-based program in China between July 2010 and December 2012. Individual epileptogenic lesion types were reviewed and their associations with seizure control examined. The MRI findings were compared with 2 previous similar studies in the United Kingdom. RESULTS: Among the 597 individuals (58% male, median age 38 years) with MRI scans analyzed, 488 (82%) had active epilepsy. The MRI was abnormal in 389 individuals (65%), with potentially epileptogenic lesion in 224 (38%) and nonspecific abnormalities in 165 (28%), and 108 (18%) were potentially resectable. The potentially epileptogenic lesions were less frequently detected in children (<18 years old, 12 of 68, 18%) than in adults (212 of 529, 40%; p < 0.001). In people with potentially epileptogenic lesions, 67% (150 of 224) had failed ≥2 antiseizure medications. They had higher risk of uncontrolled epilepsy than those with normal MRI (risk ratio [RR] 1.25; p < 0.001) and those with nonspecific abnormality (RR 1.15; p = 0.002) after adjustment for age and sex. The diagnostic yield of MRI was similar to that reported in community- and hospital-based studies in the United Kingdom. CONCLUSIONS: More than one-third of people with chronic epilepsy in rural China have potentially epileptogenic lesions identifiable on brain MRI, with two-thirds fulfilling the definition of pharmacoresistance. These findings highlight the magnitude of the unmet needs for epilepsy surgery in China.
Asunto(s)
Encefalomalacia/epidemiología , Epilepsia/epidemiología , Gliosis/epidemiología , Malformaciones del Sistema Nervioso/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias Encefálicas/diagnóstico por imagen , Neoplasias Encefálicas/epidemiología , Malformaciones Vasculares del Sistema Nervioso Central/diagnóstico por imagen , Malformaciones Vasculares del Sistema Nervioso Central/epidemiología , Niño , Preescolar , China/epidemiología , Epilepsia Refractaria , Encefalomalacia/diagnóstico por imagen , Epilepsia/diagnóstico por imagen , Femenino , Gliosis/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Malformaciones del Sistema Nervioso/diagnóstico por imagen , Prevalencia , Población Rural , Esclerosis , Lóbulo Temporal/diagnóstico por imagen , Lóbulo Temporal/patología , Reino Unido/epidemiología , Adulto JovenRESUMEN
A 73-year-old male with a history of chronic ataxia presented with transient facial droop to the Emergency Department. A CT angiogram and MRI with diffusion weighted imaging (DWI) were negative for stroke. However, incidental note was made of numerous giant arachnoid granulation pits in the posterior fossa predominantly involving the left occipital bone (Figure 1). These arachnoid pits demonstrated multiple foci of herniation of the adjacent cerebellar parenchyma into the pits with gliosis of the herniated parenchyma and focal encephalomalacia of the subjacent cerebellar parenchyma. Review of bone windows on a remote CT brain performed almost 13 years earlier confirmed this to be a longstanding abnormality (Figure 2). The patient's physical exam was suggestive of cerebellar ataxia with left-sided dysmetria on finger to nose testing and a wide-based unsteady gait.
Asunto(s)
Ataxia Cerebelosa/fisiopatología , Encefalocele/diagnóstico por imagen , Encefalomalacia/diagnóstico por imagen , Hueso Occipital/diagnóstico por imagen , Osteólisis/diagnóstico por imagen , Anciano , Ataxia Cerebelosa/etiología , Angiografía Cerebral , Angiografía por Tomografía Computarizada , Imagen de Difusión por Resonancia Magnética , Encefalocele/complicaciones , Encefalomalacia/complicaciones , Humanos , MasculinoRESUMEN
BACKGROUND: We explored the clinical and molecular characteristics of molybdenum cofactor deficiency due to MOCS2 muations. METHODS: We summarize the genetic and clinical findings of previously reported patients with a MOCS2 mutation. We also present a new patient with novel neuroradiological findings associated with molybdenum cofactor deficiency due to a novel homozygous variant in the 5' untranslated region of the MOCS2 gene. RESULTS: The study population comprised 35 patients with a MOCS2 gene mutation. All reported children had delayed motor milestones. The major initial symptom was seizures in neonatal period. Facial dysmorphism was present in 61% of the patients. Only one patient had ectopia lentis. Agenesis of the corpus callosum and an associated interhemispheric cyst in our case are novel neuroradiological findings. CONCLUSIONS: The occurrence of neonatal seizures and feeding difficulties can be the first clinical signs of molybdenum cofactor deficiency. Although there is no effective therapy for this condition, early diagnosis and genetic analysis of these lethal disorders facilitate adequate genetic counseling.
Asunto(s)
Errores Innatos del Metabolismo de los Metales/genética , Sulfurtransferasas/deficiencia , Regiones no Traducidas 5'/genética , Agenesia del Cuerpo Calloso/diagnóstico por imagen , Agenesia del Cuerpo Calloso/genética , Cisterna Magna/diagnóstico por imagen , Cisterna Magna/patología , Bases de Datos Factuales , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/genética , Cara/anomalías , Trastornos de Ingestión y Alimentación en la Niñez/genética , Femenino , Heterogeneidad Genética , Homocigoto , Humanos , Lactante , Recién Nacido , Imagen por Resonancia Magnética , Masculino , Trastornos del Movimiento/congénito , Trastornos del Movimiento/genética , Neuroimagen , Fenotipo , Convulsiones/congénito , Sulfurtransferasas/genética , Sustancia Blanca/diagnóstico por imagen , Sustancia Blanca/patologíaAsunto(s)
Núcleos Talámicos Anteriores/patología , Encefalomalacia/diagnóstico , Encefalomalacia/patología , Sistema Límbico/patología , Degeneración Nerviosa/patología , Adolescente , Núcleos Talámicos Anteriores/diagnóstico por imagen , Encefalomalacia/diagnóstico por imagen , Humanos , Sistema Límbico/diagnóstico por imagen , Imagen por Resonancia Magnética , Masculino , Degeneración Nerviosa/diagnóstico por imagenRESUMEN
Despite the availability of modern antibiotics, pneumococcal meningitis in both children and adults remains a severe disease-one known to frequently cause grave complications and residual disability. Although the appearance of arterial vasospasms in bacterial meningitis systematically has been investigated and reported on for adult patients, such research is lacking when it comes to infants. We report on a 4-week-old infant who, 6 days after onset of pneumococcal meningitis, suffered severe neurological deterioration with treatment-resistant seizures and coma. Generalized cortical and subcortical edema developed in conjunction with diminished cerebral blood flow, as depicted in magnetic resonance angiography and serial Doppler-sonographic examinations. The ischemia resulted in extensive cystic encephalomalacia. We propose that the degree of variation in cerebral blood flow in the acute phase was the result of an extensive arterial vasculopathy involving vasospasms. Awareness of this complication and prospective serial Doppler-sonographic examinations may improve our understanding of the connection between brain edema and vasculopathy. At present, however, no effective treatment appears available.
Asunto(s)
Encefalomalacia/etiología , Meningitis Neumocócica/complicaciones , Vasoespasmo Intracraneal/complicaciones , Encéfalo/diagnóstico por imagen , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/terapia , Femenino , Humanos , Lactante , Meningitis Neumocócica/diagnóstico por imagen , Meningitis Neumocócica/terapia , Vasoespasmo Intracraneal/diagnóstico por imagen , Vasoespasmo Intracraneal/terapiaRESUMEN
A 59-year-old woman with a remote history of invasive ductal carcinoma of the breast was found on a follow-up computed tomography scan of her brain to have a 1-cm lesion in the right frontal lobe in 2008. In the ensuing years, before her current admission, multiple imaging studies of the brain revealed that the lesion was stable and it was, therefore, interpreted as a small area of encephalomalacia related to a thrombosed cortical vein, a cavernoma, or treated metastatic breast cancer. In 2013, the patient underwent a bilateral salpingo-oophorectomy for ovarian tumors that were diagnosed as bilateral serous cystadenofibromas. A partial omentectomy showed no evidence of implants. In June 2016, the brain lesion was completely excised and diagnosed as an atypical proliferative (borderline) serous tumor. Immunohistochemical staining demonstrated that the tumor cells were immunoreactive for Pax8, WT-1, ER, and CK-7 and negative for Gata-3, PR, TTF-1, CDX-2, Napsin A, and CK-20, which was consistent with that diagnosis. We present a brief review of possible mechanisms to account for this unusual presentation and speculate that the most likely one is exfoliation of fallopian tube epithelial cells into the peritoneal cavity, which then gain access to lymphatics resulting in cells implanting in the brain and subsequently progressing to an atypical proliferative (borderline) serous tumor.
Asunto(s)
Neoplasias Encefálicas/secundario , Neoplasias de la Mama/patología , Cistadenocarcinoma Seroso/secundario , Cistoadenofibroma/patología , Neoplasias Ováricas/patología , Biomarcadores de Tumor/metabolismo , Biopsia , Encéfalo/patología , Neoplasias Encefálicas/diagnóstico por imagen , Neoplasias Encefálicas/patología , Neoplasias de la Mama/cirugía , Proliferación Celular , Cistadenocarcinoma Seroso/diagnóstico por imagen , Cistadenocarcinoma Seroso/patología , Cistadenocarcinoma Seroso/cirugía , Cistoadenofibroma/diagnóstico por imagen , Cistoadenofibroma/cirugía , Diagnóstico Diferencial , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/patología , Encefalomalacia/cirugía , Células Epiteliales/patología , Trompas Uterinas/patología , Femenino , Humanos , Inmunohistoquímica , Metástasis Linfática , Persona de Mediana Edad , Neoplasias Ováricas/cirugía , SalpingooforectomíaRESUMEN
Magnetic resonance plays a vital role in the aetiological diagnosis of epileptic encephalopathies, since it is capable of identifying specific aetiological patterns or patterns which are suggestive of different conditions. We review the main magnetic resonance findings that are observed in symptomatic epileptic encephalopathies.
TITLE: Neuroimagen en las encefalopatias epilepticas del lactante.La resonancia magnetica desempeña un papel crucial en el diagnostico etiologico de las encefalopatias epilepticas, al poder identificar patrones etiologicamente especificos o sugestivos de diferentes entidades. Se revisan los principales hallazgos por resonancia magnetica que se objetivan en las encefalopatias epilepticas sintomaticas.
Asunto(s)
Encefalopatías Metabólicas Innatas/diagnóstico por imagen , Síndromes Epilépticos/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Neuroimagen/métodos , Encefalopatías Metabólicas Innatas/patología , Encefalomalacia/congénito , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/patología , Síndromes Epilépticos/patología , Humanos , Lactante , Malformaciones del Desarrollo Cortical/diagnóstico por imagen , Malformaciones del Desarrollo Cortical/patología , Síndromes Neurocutáneos/diagnóstico por imagen , Síndromes Neurocutáneos/patología , Ultrasonografía Doppler TranscranealRESUMEN
RATIONALE: It is widely believed that structural abnormalities of the brain contribute to the pathophysiology of schizophrenia. The parietal lobe is a central hub of multisensory integration, and abnormities in this region might account for the clinical features of schizophrenia. However, few cases of parietal encephalomalacia associated with schizophrenia have been described. PATIENT CONCERNS AND DIAGNOSES: In this paper, we present a case of a 25-year-old schizophrenia patient with abnormal parietal encephalomalacia. The patient had poor nutrition and frequently had upper respiratory infections during childhood and adolescence. She showed severe schizophrenic symptoms such as visual hallucinations for 2 years. After examining all her possible medical conditions, we found that the patient had a lesion consistent with the diagnosis of encephalomalacia in her right parietal lobe and slight brain atrophy. INTERVENTIONS: The patient was prescribed olanzapine (10âmg per day). OUTCOMES: Her symptoms significantly improved after antipsychotic treatment and were still well controlled 1 year later. LESSONS: This case suggested that parietal encephalomalacia, which might be caused by inflammatory and infectious conditions in early life and be aggravated by undernutrition, might be implicated in the etiology of schizophrenia.
Asunto(s)
Encefalomalacia/complicaciones , Esquizofrenia/etiología , Adulto , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/patología , Femenino , Humanos , Imagen por Resonancia Magnética , Lóbulo Parietal/patología , Esquizofrenia/diagnóstico por imagen , Esquizofrenia/patologíaRESUMEN
In a sample of children with traumatic brain injury, this magnetic resonance imaging (MRI)-based investigation examined whether presence of a focal lesion uniquely influenced cortical thickness in any brain region. Specifically, the study explored the relation of cortical thickness to injury severity as measured by Glasgow Coma Scale score and length of stay, along with presence of encephalomalacia, focal white matter lesions or presence of hemosiderin deposition as a marker of shear injury. For comparison, a group of children without head injury but with orthopedic injury of similar age and sex were also examined. Both traumatic brain injury and orthopedic injury children had normally reduced cortical thickness with age, assumed to reflect neuronal pruning. However, the reductions observed within the traumatic brain injury sample were similar to those in the orthopedic injury group, suggesting that in this sample traumatic brain injury, per se, did not uniquely alter cortical thickness in any brain region at the group level. Injury severity in terms of Glasgow Coma Scale or longer length of stay was associated with greater reductions in frontal and occipitoparietal cortical thickness. However, presence of focal lesions were not related to unique changes in cortical thickness despite having a prominent distribution of lesions within frontotemporal regions among children with traumatic brain injury. Because focal lesions were highly heterogeneous, their association with cortical thickness and development appeared to be idiosyncratic, and not associated with group level effects.
Asunto(s)
Lesiones Traumáticas del Encéfalo/diagnóstico por imagen , Corteza Cerebral/diagnóstico por imagen , Lesiones Traumáticas del Encéfalo/complicaciones , Lesiones Traumáticas del Encéfalo/metabolismo , Corteza Cerebral/metabolismo , Niño , Enfermedad Crónica , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/etiología , Encefalomalacia/metabolismo , Femenino , Escala de Coma de Glasgow , Hemosiderina/metabolismo , Humanos , Tiempo de Internación , Imagen por Resonancia Magnética , Masculino , Tamaño de los Órganos , Sustancia Blanca/diagnóstico por imagen , Sustancia Blanca/metabolismoAsunto(s)
Foramen Oval Permeable/diagnóstico por imagen , Embolia Pulmonar/diagnóstico por imagen , Adulto , Tabique Interatrial/diagnóstico por imagen , Angiografía por Tomografía Computarizada , Ecocardiografía , Embolectomía , Encefalomalacia/diagnóstico por imagen , Ventrículos Cardíacos/diagnóstico por imagen , Humanos , Masculino , Imagen Multimodal , Embolia Pulmonar/cirugía , Trombosis/diagnóstico por imagenRESUMEN
N-methyl-D-aspartate receptor antibodies (NMDAR-Abs) can contribute to neurological relapse after herpes simplex virus encephalitis (HSE). We describe a child with NMDAR-Ab encephalitis after HSE, which was recognized and treated early. We discuss the case in the context of existing reports, and we propose a modified immunotherapy strategy to minimize risk of viral reactivation.
Asunto(s)
Aciclovir/uso terapéutico , Encefalitis Antirreceptor N-Metil-D-Aspartato/complicaciones , Encefalitis Antirreceptor N-Metil-D-Aspartato/terapia , Encefalitis por Herpes Simple/complicaciones , Encefalitis por Herpes Simple/terapia , Terapia de Inmunosupresión/métodos , Receptores de N-Metil-D-Aspartato/inmunología , Encefalitis Antirreceptor N-Metil-D-Aspartato/diagnóstico por imagen , Encefalitis Antirreceptor N-Metil-D-Aspartato/rehabilitación , Antivirales/uso terapéutico , Autoanticuerpos/inmunología , Clonidina/uso terapéutico , Diazepam/uso terapéutico , Encefalitis por Herpes Simple/diagnóstico por imagen , Encefalitis por Herpes Simple/rehabilitación , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/etiología , Femenino , Fiebre/etiología , Humanos , Huésped Inmunocomprometido/efectos de los fármacos , Huésped Inmunocomprometido/inmunología , Lactante , Leucoencefalopatías/diagnóstico por imagen , Leucoencefalopatías/etiología , Trastornos del Movimiento/etiología , Rehabilitación Neurológica , Pakistán , Paresia/etiología , Fenobarbital/uso terapéutico , Fenitoína/uso terapéutico , Plasmaféresis , Convulsiones/etiología , Trihexifenidilo/uso terapéutico , Reino Unido , Ácido Valproico/uso terapéuticoRESUMEN
It has been established that twin pregnancies are at an increased risk for complications, including the risk of morbidity or mortality for one or both of the infants. Cerebral palsy and other associated neurological deficits also occur at higher rates in twin pregnancies. This report examines two cases of intrauterine demise of one twin with subsequent survival of the co-twin. In both cases, the surviving infant suffered significant neurological sequelae. Impairments observed in these two cases include multicystic encephalomalacia and periventricular leukomalacia as well as the subsequent development of cerebral palsy. This case study explores the predisposing factors, incidence, pathophysiology, consequences, and future research implications of these findings.
Asunto(s)
Parálisis Cerebral/patología , Encefalomalacia/patología , Leucomalacia Periventricular/patología , Embarazo Gemelar , Ultrasonografía Prenatal , Parálisis Cerebral/diagnóstico por imagen , Parálisis Cerebral/mortalidad , Cesárea/estadística & datos numéricos , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/mortalidad , Femenino , Muerte Fetal , Humanos , Recién Nacido , Leucomalacia Periventricular/diagnóstico por imagen , Leucomalacia Periventricular/mortalidad , Masculino , Embarazo , GemelosAsunto(s)
Encéfalo/anomalías , Desarrollo Infantil , Encefalomalacia/patología , Encefalomalacia/fisiopatología , Plasticidad Neuronal , Remisión Espontánea , Encéfalo/fisiopatología , Preescolar , Ecoencefalografía , Encefalomalacia/diagnóstico por imagen , Humanos , Lactante , Recién Nacido , Imagen por Resonancia Magnética , MasculinoAsunto(s)
Encefalomalacia/diagnóstico por imagen , Arteria Cerebral Media/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Anciano de 80 o más Años , Encefalomalacia/etiología , Femenino , Lateralidad Funcional , Humanos , Arteria Cerebral Media/patología , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/diagnóstico por imagenRESUMEN
INTRODUCTION: Unconsciously detected chemicals may affect human behaviour (Kirk-Smith et al., 1983; Stern and McClintock, 1998; Zucco et al., 2009), likeability judgements (Li et al., 2007) and brain activity (Lorig et al., 1990; Sobel et al., 1999). No studies, however, have investigated blind smell - the hypothetical olfactory counterpart of blindsight (Weiskrantz et al., 1974). METHODS: In this report, free and cued olfactory identification of suprathreshold odorants varying in irritancy (i.e., low or no irritant odours versus irritant odours), and taste identification abilities, were examined in patient MB who had undergone surgery for a meningioma. Post-operative imaging revealed encephalomalacia in the left gyrus rectus, with ablation of the left olfactory bulb and damage to the right, subcortical abnormality on the left near the orbital cortex, and damage to a small section of the right gyrus rectus. RESULTS: On free identification MB, while denying a capacity to smell the odours, still correctly identified some and detected others significantly above chance. In contrast, awareness always accompanied correct detections of irritant odours. Cued odour identification was at chance and no taste impairments were observed. CONCLUSIONS: We suggest, tentatively, that MB's unusual pattern of awareness when detecting and identifying odours relative to irritant odours may represent an example of 'blind smell'.
Asunto(s)
Bulbo Olfatorio/lesiones , Olfato/fisiología , Adulto , Concienciación/fisiología , Corteza Cerebral/lesiones , Corteza Cerebral/patología , Craneotomía/efectos adversos , Encefalomalacia/diagnóstico por imagen , Encefalomalacia/psicología , Humanos , Irritantes , Imagen por Resonancia Magnética , Masculino , Meningioma/cirugía , Pruebas Neuropsicológicas , Procedimientos Neuroquirúrgicos/efectos adversos , Odorantes , Complicaciones Posoperatorias/diagnóstico por imagen , Complicaciones Posoperatorias/psicología , Desempeño Psicomotor/fisiología , Radiografía , Reconocimiento en Psicología/fisiología , Umbral Sensorial/fisiologíaRESUMEN
OBJECTIVE: The goal of this study was to determine the effect of hyperbaric oxygen therapy on the clinical outcome of patients after resection of meningiomas with conspicuous peritumoral brain edema (PTBE). PATIENTS AND METHODS: 232 patients with intracranial meningiomas and conspicuous PTBE were allocated to the HBO2 Group or the Control Group (116 in each group). The Karnofsky Performance Score (KPS), the focal brain edema and the encephalomalacia in the operative region, as well as the number of patients with neurological deficits were compared statistically between the two groups at different times after the operation. RESULTS: On the third day after operation, the KPS and focal brain edema in the operative region between the HBO2 Group and the Control Group were not significantly different (p > 0.05), but 15 days after surgery, compared with the Control Group, the KPS of the HBO2 Group appeared obviously higher (p < 0.05), and the focal brain edema in the operative region was definitely smaller (p < 0.05). Six months after surgery, the volume of encephalomalacia in operative region and the number of patients with neurological deficits in the HBO2 Group were significantly less than those in the Control Group (p < 0.05). CONCLUSION: HBO2 therapy is effective in reducing edema formation and neurological deficits after resection of meningiomas with conspicuous PTBE.