Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 18 de 18
Filter
1.
Arq. bras. neurocir ; 40(2): 113-119, 15/06/2021.
Article in English | LILACS | ID: biblio-1362174

ABSTRACT

Objective The purpose of the present study is to demonstrate the usefulness of intraoperative ultrasound guidance as a technique for the assessment, in real time, of tumor resection and as a navigation aid during intra-axial brain lesion removal on patients admitted in the Neurosurgical Department at the Hospital Universitario de Caracas, Caracas, Venezuela, in 2018. Methods A total of 10 patients were enrolled, each with intra-axial brain lesions with no previous neurosurgical procedures and a mean age of 49 years old, ranging from 29 to 59 years old. Results A male predominance was observed with 7 cases (70%) over 3 female cases (30%). Six patients had lesions in the dominant hemisphere. The frontal lobe was the most commonly affected,with 5 cases, followed by the parietal lobe,with 4 cases. After craniotomy, ultrasound evaluation was performed previously to dural opening, during tumor resection and after tumor removal. The mean tumor size in axial, coronal and sagittal views was 3.72 cm, 3.08 cm and 3.00 cm, respectively, previously to dural opening with intraoperative ultrasound. The average tumor depth was 1.73 cm from the cerebral cortex. The location and removal duration from the beginning of the approach (ultrasound usage time) was 83.60 minutes, and the average surgery duration was 201 minutes. Navigation with intraoperative ultrasound served to resect intra-axial tumors more precisely and safely. There was no postoperative complication associated with the surgery in this series of cases. Conclusions Intraoperative ultrasound guidance for intra-axial subcortical tumor resection is a technique that serves as a surgical and anatomical orientation tool.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Brain Neoplasms/surgery , Monitoring, Intraoperative/methods , Ultrasonography , Neuronavigation/methods , Glioma/surgery , Brain Neoplasms/diagnostic imaging , Epidemiology, Descriptive , Neurosurgical Procedures/methods , Craniotomy/methods , Glioma/physiopathology , Glioma/diagnostic imaging
2.
Arq. bras. neurocir ; 33(3): 233-239, set. 2014. ilus, tab
Article in Portuguese | LILACS | ID: lil-756179

ABSTRACT

Objetivo: Analisar a influência da topografia da lesão tumoral na resposta ao tratamento intranasal com álcool perílico (POH) em jovens com glioma maligno recidivo. Método: Tendo como padrão a faixa etária de 0 a 19 anos, foram incluídos pacientes do sexo masculino (#153; #31) e feminino (#178) com glioma maligno em estágio terminal, recebendo terapia de suporte paliativa e administração intranasal diária de 440 mg de POH. Resultados: Cefaleia intensa, tontura, vômito, crise convulsiva, alteração de comportamento, fraqueza muscular, alteração visual e hemiplegia à direita foram os sintomas prevalentes antes da confirmação diagnóstica de glioma. Análise de imagem mostrou lesão tumoral nas regiões troncocerebral (#153), talamomesencefálica esquerda (#178) e frontotemporal e insular direita (#31). Paciente #178 não respondeu ao tratamento, evoluindo a óbito em três semanas, e paciente #31 permaneceu em tratamento com POH por aproximadamente 54 semanas. Apesar de nova recidiva, paciente #153 apresenta doença estável, sem qualquer evidência clínica de recorrência para mais de 200 semanas em tratamento exclusivo com álcool perílico por via intranasal. Conclusão: Pacientes adolescentes com glioma maligno recidivo apresentaram heterogeneidade de sintomas compatível coma região anatômica comprometida, indicando que a topografia da lesão tumoral foi um fator prognóstico de sobrevida, influenciando inclusive na resposta ao tratamento intranasal com o álcool perílico.


Objective: Analyze the influence of tumor topography on response to intranasal perillyl (POH) treatment in youths with high grade glioma. Method: It was included male patients (#153; #31) with 19 years old and female (#178) with 15 years old with recurrent high grade glioma in terminal stage using supportive therapy and 440 mg POH daily intranasal administration. It was established a relation of clinical data and topographic image with therapeutic response to intranasal POH. Results: Intense headache, dizziness, vomiting, seizures, behavior change, muscle weakness, visual changes and right hemiplegia were the symptoms prevalent before the diagnostic confirmation of glioma. Image analysis showed tumoral lesionin the brain-stem (#153), in the left thalamus-mesencephalic region (#178), and right frontal-temporal and insular regions (#31). Patient #178 did not respond to intranasal POH treatment and rapidly progressed to death within 3 weeks; patient #31 remained in treatment with POH for nearly 54 weeks, and despite new recurrence, patient #153 presents stable disease, without any clinical evidence of recurrence for more than 200 weeks and under treatment exclusively with POH by intranasal route. Conclusion: Childhood patients with high grade malignant glioma had heterogeneity of clinical symptoms compatible with anatomical compromised region indicating that topography of the tumoral lesion was a prognostic factor influencing the overall survival and response to intranasal POH.


Subject(s)
Humans , Male , Female , Adolescent , Administration, Intranasal/methods , Monoterpenes/administration & dosage , Monoterpenes/therapeutic use , Glioma/physiopathology , Glioma/drug therapy , Glioma/diagnostic imaging , Prospective Studies
3.
In. Guimarães, Marcos Duarte; Chojniak, Rubens. Oncologia. Rio de Janeiro, Elservier, 2014. p.149-182, ilus.
Monography in Portuguese | LILACS | ID: lil-751084
4.
Rev. chil. neurocir ; 36: 40-45, jun. 2011. ilus
Article in English | LILACS | ID: lil-665170

ABSTRACT

Introduction: Maximal surgical resection of brain high grade glioma, involves the risk of damaging either eloquent cortical areas or efferent subcortical white matter tracts. Identification of the anatomical and functional relation between the tumor and adjacent functional cortical areas or eloquent white matter bundles may provide critical information to guide tumor resection and prevent surgical morbidity. The main objective of this study was to assess the combined use of diffusion tensor (DT) tractography and functional magnetic resonance (fMR) imaging to assist in the extent of resection of brain high grade glioma (HGG) with preservation of eloquent areas. Material and methods: 42 consecutive patients harboring brain HGG underwent surgery with the purpose of maximal resection. Patients were randomly divided in two groups: Group A (22 cases): control group, and group B (20 cases), where surgery was performed with navigation and combined use of DT imaging and fMR imaging. Results: Extent of resection in group A was 81.5 percent and 90.5 percent in group B (ANOVAs test p=0, 03). We did not observed differences in postoperative neurological deficit and surgical time between both groups. Conclusion: The combined use of tractography, functional MRI and neuronavigation may provide critical information to guide brain high grade glioma resection without increasing surgical morbidity or surgical time.


Introducción: La resección radical de los gliomas cerebrales de alto grado (GCAG) comporta el riesgo de afectación tanto de áreas corticales elocuentes como de los tractos subcorticales de sustancia blanca. La identificación de la relación anatómica y funcional entre el tumor y las áreas corticales o los tractos de sustancia blanca elocuentes, puede proporcionar una información fundamental para guiar la resección quirúrgica y contribuir a reducir la morbilidad postquirúrgica. El principal objetivo del estudio es el análisis del uso combinado de la tractografía y la resonancia magnética funcional (RMf) en el grado de resección de gliomas cerebrales de alto grado con preservación de áreas elocuentes. Material y métodos: Presentamos 42 pacientes con diagnóstico de GCAG y localización próxima a córtex motor o áreas del lenguaje, que fueron intervenidos quirúrgicamente con el objetivo de llevar a cabo una resección radical de la lesión. Los pacientes se distribuyeron de forma aleatoria en 2 grupos: el grupo A (22 pacientes) fue el grupo control y el grupo B (20 casos) fue también intervenido pero utilizando la neuronavegación y el uso combinado de tractografía y RMf. Resultados: El grado de resección en el grupo A fue de un 81,5 por ciento y del 90,5 en el grupo B (test de ANOVA p=0,03). No observamos diferencias en la incidencia de morbilidad postquirúrgica o del tiempo de cirugía entre ambos grupos. Conclusiones: El uso combinado de la tractografía, RMf y neuronavegación proporciona una información funcional que facilita la cirugía de los GCAG sin incrementar la morbilidad o el tiempo de cirugía.


Subject(s)
Humans , Male , Adult , Female , Young Adult , Middle Aged , Diffusion Magnetic Resonance Imaging , Glioma/surgery , Glioma/physiopathology , Neuronavigation , Brain Neoplasms/surgery , Brain Neoplasms/physiopathology , Case-Control Studies , Motor Cortex/physiopathology , Diffusion Tensor Imaging , Neurosurgical Procedures/methods , Surgery, Computer-Assisted
6.
Arq. bras. neurocir ; 29(1): 7-13, mar. 2010. graf, tab, ilus
Article in Portuguese | LILACS | ID: lil-585497

ABSTRACT

Objetivo: Avaliar a correlação da topografia tumoral e edema peritumoral com a resposta terapêutica à administração intranasal do álcool perílico (AP) em uma coorte de pacientes com gliomas malignos recidivos. Métodos: Os autores revisaram retrospectivamente 67 pacientes com gliomas malignos recidivos que receberam administração intranasal de 440 mg de AP diariamente. Parâmetros avaliados incluíram aspectos clínicos e os de neuroimagem. Avaliação clínica incluiu dados demográficos, sintomas iniciais e sobrevida global. Dados de imagem incluíram topografia tumoral, volume tumoral, presença de desvio da linha média eextensão de edema peritumoral. Análise bioestatística foi realizada usando testes log rank. Sobrevida global foi medida e analisada pelo método de Kaplan Meier, incluindo intervalos de confiança de 95 por cento. Resultados: Um total de 67 pacientes foi investigado, 52 (77,6 por cento) com glioblastoma (GBM), 10 (14,9 por cento) com astrocitoma anaplásico (AA) e 5 (7,4 por cento) com oligodendrioglioma anaplásico (OA). Todos os cinco pacientes com AO apresentaram tumor de localização lobar. Nos AA, oito casos estavam localizados em região talâmica e dois em região lobar, enquanto que, nos GBM, 11 casos de localização talâmica e 41 lobares. A relação volume tumoral e edema peritumoral foi observada. Pacientes com regressão tumoral e edema peritumoral apresentaram resposta positiva enquanto que aqueles com regressão tumoral sem regressão do edema peritumoral não apresentaram boa evolução clínica. Pacientes com gliomas profundos sobreviveram significativamente mais tempo do que aqueles com gliomas lobares (log rank test, p = 0,0003). Presença de desvio da linha média (> 1 cm) foi estatisticamente significante como fator de risco para a sobrevida mais curta (log rank test,p = 0,0062). Conclusões...


To evaluate the correlation of tumor topography and peritumoral brain edema with the therapeutic response of intranasal administration of perillyl alcohol (POH) in a cohort of patients with recurrent malignant gliomas. Methods: We retrospectively reviewed 67 consecutive patients with recurrent malignant gliomas who received administration intranasal of POH 440 mg daily. The parameters evaluated were clinical features and the neuroimaging findings. Clinical data included demographics, initial symptoms, and overall survival.Imaging analysis included tumor topography, tumor size, presence of midline shift and extent of peritumoraledema. Biostatistics was carried out using log rank tests. Overall survival was measure and analyzedby Kaplan Meier method including 95% confidence intervals. A total of 67 patients were investigated,52 (77.6%) with glioblastoma (GBM), 10 (14.9%) with anaplastic astrocytoma (AA) and 5 (7.4%) withanaplastic oligodendroglioma (AO). All five AO had lobar localization, AA were lobar in 8 cases and deep in 2 cases, whereas GBM were lobar in 41 cases and deep in 11 cases. Results: A relationship between the tumor size and the volume of peritumoral brain edema (PTBE) was observed. Patients with regression of the tumor and PTBE had positive response whereas those with regression of the tumor without PTBE regression had poor prognosis. Patients with deep tumors survived significantly longer than those with lobar gliomas (log rank test, p=0.0003). Presence of midline shift (> 1 cm) was a statistically significant risk factor for shorter survival (log rank test, p=0.0062). Conclusions...


Subject(s)
Humans , Male , Female , Young Adult , Middle Aged , Administration, Intranasal , Brain Edema/pathology , Glioma/physiopathology , Glioma/drug therapy , Monoterpenes/administration & dosage , Monoterpenes/therapeutic use
7.
Arq. bras. neurocir ; 27(2): 37-41, jun. 2008. ilus
Article in Portuguese | LILACS | ID: lil-551097

ABSTRACT

Introdução: Metaloproteases de matriz extracelular(MMP) são enzimas proteolíticas sintetizadas na fase de fenótipo mais agressivo dos gliomas malignos, degradando proteínas da matriz extracelular,ocasionando ruptura da barreira hematoencefálica e contribuindo para a resposta neuroinflamatória,angiogênese e migração.Estudos mostram expressão de gelatinase A(MMP-2)proeminentemente nas células gliais tumorais,com pouca expressão na microvasculatura,enquanto expressão de gelatinase B(MMP-9)é proeminente na microvasculatrua, com porco sinal nas células tumorais.Objetivo:Neste estudo analisamos amostras de soro de 34 pacientes com gliomas malignos recidivos,antes e durante o tratamento com álcool perílico por via inalatória para determinar se a expressão de MMP poderia ser usada como indicador prognóstico.Métodos:A atividade gelatinade (MMP-2, MMP-9)nas amostras de soro foi determinada por zimografia e a atividade enzimática relativa foi determinada utilizando-se programa de análise densitométrica.Os valores foram correlacionados com exames de imagem e sobrevida dos pacientes. Resultados:Os resultados obtidos em nosso estudo evidenciaram que os pacientes com gliomas malignos apresentaram aumento da expressão de MMP-2 e MMP-9 quando comparados com pacientes saudáveis.Expressão aumentada de MMP-2 foi proporcional à progressão tumoral,sobrevida desfavorável e área de edema peritumoral.Conclusão:Esses resultados indicam proporcionalidade entre a expressão de MMP-2 e a malignidade dos gliomas, sugerindo seu emprego como indicador prognóstico para recorrência tumoral pós-operatória e sobrevida desfavorável dos pacientes.


Subject(s)
Humans , Extracellular Matrix , Glioma/physiopathology , Glioma/therapy , Metalloproteases/administration & dosage , Metalloproteases/adverse effects
8.
Arq. neuropsiquiatr ; 62(2b): 444-448, jun. 2004.
Article in English | LILACS | ID: lil-362208

ABSTRACT

O teste do amital sódico intracarotídeo (TASI ou teste de Wada) é procedimento comum na avaliação de pacientes portadores de epilepsia clinicamente refratária candidatos a cirurgia de epilepsia. Tem por objetivo promover interrupção seletiva e temporária da função hemisferial, definindo lateralização de linguagem e risco de comprometimento de memória no pós-operatório. São esperadas mudanças comportamentais durante o teste, as quais podem durar vários minutos, porém, em geral, são sutis e facilmente manejáveis. Relatamos uma série de casos em que ocorreram comportamentos pouco usuais, bizarros, incluindo agitação e agressividade. Estes comportamentos comprometem o teste (paciente deve ser contido), podendo levar a atrasos ou mesmo abortamento do mesmo, além de produzir dados menos confiáveis. Os casos foram revisados, visando a definição de preditores de sua ocorrência. Estas reações são raras (5% dos casos). Efeito barbitúrico, perfil psiquiátrico, dominância cerebral e seletividade da injeção não puderam ser validados como preditores. Explicações detalhadas, repetição e simulações podem ser utéis na prevenção deste tipo de ocorrência.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Amobarbital/pharmacology , Behavior/drug effects , Epilepsy/physiopathology , Hypnotics and Sedatives/pharmacology , Brain Neoplasms/physiopathology , Brain Neoplasms/surgery , Carotid Arteries , Epilepsy, Temporal Lobe/physiopathology , Epilepsy, Temporal Lobe/surgery , Epilepsy/surgery , Glioma/physiopathology , Glioma/surgery , Injections, Intra-Arterial , Parietal Lobe , Predictive Value of Tests
9.
Neurol India ; 2004 Mar; 52(1): 79-81
Article in English | IMSEAR | ID: sea-121001

ABSTRACT

BACKGROUND: Regional differences in vascular response to anesthetic agents in brain areas with and without tumors have not been investigated till now. The existence of such differences may influence the regional distribution of cerebral blood flow under anesthesia. MATERIAL AND METHODS: In 8 patients with frontotemporal gliomas, middle cerebral artery blood flow velocity (VMCA), pulsatality index (PI) and resistance index (RI) were determined in the normal and pathological cerebral hemispheres before and after stable nitrous oxide-halothane anesthesia. RESULTS: During halothane anesthesia, there was an increase in VMCA both in the normal cerebral hemisphere (69 +/- 11 to 100 +/- 38 cm/s; P = 0.05) and the hemisphere with tumor (65 +/- 17 to 83 +/- 28 cm/s; P = 0.04). A significant decrease in the pulsatality index and the resistance index was also observed in both the hemispheres (P < 0.05). The percentage changes of VMCA, PI and RI in both the hemispheres after anesthesia were not significantly different. CONCLUSIONS: In patients with cerebral tumors, nitrous oxide-halothane anesthesia causes comparable changes of cerebral blood flow velocities in the hemisphere with tumor and the normal hemisphere.


Subject(s)
Adult , Anesthesia, Inhalation , Brain Neoplasms/physiopathology , Cerebrovascular Circulation/physiology , Female , Functional Laterality/physiology , Glioma/physiopathology , Halothane , Hemodynamics/drug effects , Humans , Male , Middle Aged , Neurosurgical Procedures , Nitrous Oxide , Ultrasonography, Doppler, Transcranial , Vascular Resistance/drug effects
10.
Neurol India ; 2000 Dec; 48(4): 347-50
Article in English | IMSEAR | ID: sea-120022

ABSTRACT

Thirty one patients with thalamic glioma underwent a pre-tumour resection shunt surgery. The procedure was uneventful in 23 patients with relief from symptoms of increased intracranial pressure. Eight patients worsened after the procedure. The level of sensorium worsened from excessively drowsy state to unconsciousness in seven patients. Three patients developed hemiparesis, 4 developed paresis of extra-ocular muscles and altered pupillary reflexes, and 1 developed incontinence of urine and persistent vomiting. Alteration in the delicately balanced intracranial pressure and movements in the tumour and vital adjacent brain areas could be the probable cause of the worsening in the neurological state in these 8 patients. On the basis of these observations and on review of literature, it is postulated that the ventricular dilatation following an obstruction in the path of the cerebrospinal fluid flow by a tumour could be a natural defense phenomenon of the brain.


Subject(s)
Adolescent , Adult , Brain Neoplasms/physiopathology , Cerebrospinal Fluid Shunts/adverse effects , Child , Female , Glioma/physiopathology , Humans , Hydrocephalus/physiopathology , Male , Postoperative Complications , Preoperative Care/methods , Thalamic Diseases/physiopathology , Ventricular Pressure
11.
Rev. colomb. radiol ; 9(4): 453-5, dic. 1998. ilus
Article in Spanish | LILACS | ID: lil-293542

ABSTRACT

Se presenta el caso de una paciente de 3 años y 10 meses cuya sintomatología neurológica, de 3 meses de evolución, consistía en rotación externa de pie izquierdo y arrastre del pie en marcha, asociado a cambios de comportamiento. En los estudios imagenologicos con escanografía y resonancia magnética, se evidenció una gran masa en lóbulo temporal derecho heterogénea, de bordes bien delimitados. WEs llevada a cirugía y el gran reporte histológico e inmunohistoquímico GFAP (Proteína Acida Glial Fibrilar) es de Xantoastrocitoma pleomorfico, como hallazgo adicional se encontró actividad mitótica aumentada lo cual habla de mal pronostico


Subject(s)
Humans , Astrocytoma/complications , Astrocytoma/diagnosis , Astrocytoma/surgery , Glioma/diagnosis , Glioma/etiology , Glioma/physiopathology
13.
Arch. neurociencias ; 1(1): 46-9, ene.-mar. 1996. ilus, tab
Article in Spanish | LILACS | ID: lil-210786

ABSTRACT

Se presentan dos casos de glioma de las vías ópticas. El primero, en una niña de tres años diez meses, localizado en la porción intraorbitaria del nervio óptico izquierdo, fue diagnosticado y operado en 1977. Se hizo una resección subtotal y se aplicó radioterapia posoperatoria. Fue reoperado en 1982 con resección subtotal y se aplicó radiación con acelerador lineal. Actualmente, la paciente tiene 18 años y aparentemente esta curada, con amaurosis izquierda. El segundo caso se presenta en una niña de tres años, de localización optoquiasmática e hipotalámica late-realizado a la derecha con resección subtotal, presentando amaurosis derecha y diabetes insípida. Siendo tratada con quimioterapia posquirúrica


Subject(s)
Child, Preschool , Humans , Female , Antineoplastic Agents/administration & dosage , Drug Therapy, Combination , Eye Neoplasms/therapy , Glioma/physiopathology , Optic Nerve/physiopathology , Radiotherapy
14.
JPMA-Journal of Pakistan Medical Association. 1996; 46 (3): 61-62
in English | IMEMR | ID: emr-41620
16.
Arq. Inst. Penido Burnier ; 36(1): 48-54, jan. 1994. ilus
Article in Portuguese | LILACS | ID: lil-152608

ABSTRACT

Os autores fazem uma revisäo das principais patologias que acometem o quiasma: adenomas hipofisários, meningeomas, craniofaringeomas, gliomas e aneurismas. Säo referidos os aspectos neuro-oftalmológicos das diversas desordens com ênfase para o papel do oftalmologista no diagnóstico e seguimento adequados


Subject(s)
Humans , Male , Female , Child , Middle Aged , Adenoma/physiopathology , Aneurysm/physiopathology , Cranial Nerve Neoplasms/physiopathology , Glioma/physiopathology , Optic Chiasm/physiopathology
17.
J Postgrad Med ; 1992 Jan-Mar; 38(1): 37-40, 40A-40B
Article in English | IMSEAR | ID: sea-115588

ABSTRACT

Characteristically continuous facial myokymia is a pathognomonic, exceedingly rare physical sign of intrinsic brain-stem lesions e.g. multiple sclerosis (where the myokymia lasts only for a few months), pontine glioma (where it is unremitting for years). The physiopathogenesis is unclear. Electromyographic patterns are characteristic. Therapy and prognosis are related to the basic aetio-pathological process. Only two out of 132 cases of intrinsic brain-stem lesions in the department of Neurosurgery, Seth G.s. Medical College, Bombay over a period of 3 decades, exemplify its rarity. These two cases are reported here and the relevant literature is reviewed.


Subject(s)
Adult , Brain Neoplasms/physiopathology , Brain Stem/physiopathology , Cranial Irradiation , Electromyography , Evoked Potentials, Auditory, Brain Stem/physiology , Facial Muscles/innervation , Fasciculation/physiopathology , Female , Glioma/physiopathology , Humans , Male , Tomography, X-Ray Computed
18.
In. Nitrini, Ricardo; Spina Franca, Antonio; Scaff, Milberto; Bacheschi, Luiz Alberto; Assis, L. M; Canelas, Horario Martins. Condutas em neurologia. s.l, Clinica Neurologica HC/FMUSP, 1989. p.167-71, tab.
Monography in Portuguese | LILACS | ID: lil-92789
SELECTION OF CITATIONS
SEARCH DETAIL