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1.
Radiol Case Rep ; 19(6): 2487-2491, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38585387

ABSTRACT

Tuberculomas are rare and a life-threatening condition. Diagnosis followed by appropriate treatment can lead to complete resolution of the disease. A suggestive imaging study in an appropriate clinical setting can lead to the diagnosis. We describe a case of a postpartum woman with a headache and seizure in which eclampsia was the initial suspicion. Imaging exams demonstrated a solitary expansile lesion in the left parietal lobe suspicious of neoplasia. A biopsy, instead, confirmed a tuberculoma. In addition to eclampsia, many other differential diagnoses are possible in the context of seizures in pregnant and peripartum patients, including central nervous system tuberculosis. Brain imaging studies can be crucial in the diagnostic process.

3.
Surg Neurol Int ; 11: 328, 2020.
Article in English | MEDLINE | ID: mdl-33194262

ABSTRACT

BACKGROUND: Meningioma is the most common benign intracranial neoplasm, accounting for 30% of all primary brain tumors. In 90% of cases, meningiomas are benign. Several aspects of molecular biology, including potential biomarkers, have been studied in attempts to better understand the natural history of meningiomas. Vascular endothelial growth factor (VEGF) is a biomarker responsible for inducing physiological and pathological angiogenesis. VEGF expression has been investigated as a potential predictor of several tumor aspects, including growth rate, recurrence rate, brain tissue invasion, peritumoral edema and surgical prognosis, and also as a marker of histological grade. However, there is no consensus in the literature with respect to the association between this biological factor and meningioma. We digitally analyzed immunohistochemical images using ImageJ software with the aim of correlating VEGF expression with tumor histology. METHODS: Tissue samples from patients presenting with meningioma who had undergone surgical removal between 2007 and 2016 at the Hospital de Clínicas de Porto Alegre (HCPA), in Southern Brazil, were analyzed to identify possible immunohistochemical associations between VEGF and histological grade and subtype. RESULTS: Seventy-six patients were included; 82% were female, mean age was 59.9 years (range: 18-91). No statistically significant associations were found between VEGF expression and histological grade or subtype (P = 0.310). CONCLUSION: Our findings suggest that VEGF is frequently present in meningiomas regardless of histological grade and should not be used as a marker of severity or histological grade.

4.
Surg Neurol Int ; 10: 193, 2019.
Article in English | MEDLINE | ID: mdl-31637094

ABSTRACT

BACKGROUND: The aim of the study was to characterize the clinical profile of patients with anterior communicating artery (ACoA) aneurysms and examine potential correlations between clinical findings, aneurysm morphology, and outcome. METHODS: A review of medical records and diagnostic neuroimaging reports of patients treated at a neurosurgical service in Porto Alegre, Brazil, between August 2008 and January 2015 was performed. RESULTS: During the period, 100 patients underwent surgery for ACoA aneurysms. Fifteen had unruptured aneurysms and 85 had ruptured aneurysms. Ruptured aneurysms had a higher aspect ratio than unruptured ones (2.37 ± 0.71 vs. 1.93 ± 0.51, P = 0.02). Intraoperative rupture occurred in 3%, and temporary clipping was performed in 15%. Clinical vasospasm occurred in 43 patients with ruptured aneurysms (50.6%). Overall, mortality was 26%; 25 patients in the ruptured group (29.4%) and one in the unruptured group (6%). The Glasgow Outcome Scale (GOS) was favorable (GOS 4 or 5) in 54% of patients, significantly more so in those with unruptured aneurysms (P = 0.01). In patients with ruptured aneurysms, mortality was associated with preoperative Hunt and Hess (HH) score (P < 0.001), hydrocephalus (P < 0.001), and clinical complications (P < 0.001). Unfavorable outcomes were associated with HH score (P < 0.001), Fisher grade (P = 0.015), clinical vasospasm (P = 0.012), external ventricular drain (P = 0.015), hydrocephalus (P < 0.001), and presence of clinical complications (P = 0.001). In patients with unruptured aneurysms, presence of clinical complications was the only factor associated with mortality (P < 0.001). CONCLUSION: Despite advances in the management of subarachnoid hemorrhage and surgical treatment of aneurysms, mortality is still high, especially due to clinical complications.

5.
Surg Neurol Int ; 10: 169, 2019.
Article in English | MEDLINE | ID: mdl-31583166

ABSTRACT

BACKGROUND: Despite colloid cyst in the third ventricle is a very usual cause of hydrocephalus, its xanthogranulomatous variant is rare. The most important differential diagnosis is the third ventricular craniopharyngioma. To the best of the authors' knowledge, there have been few cases of xanthogranulomatous variant colloid cysts reported in the English literature. CASE DESCRIPTION: A 77-year-old white woman presented with headaches, memory loss, and abnormal gait for the past 4 months. Magnetic resonance imaging revealed a solid cystic lesion measuring 3.0 cm×2.8 cm×2.9 cm located inside the anterior portion of the third ventricle causing obstructive hydrocephalus. The posterior portion of the lesion was predominantly solid and hypointense on T2 and T1, with areas of post- contrast enhancement, and the anterior portion was predominantly cystic with both hyper- and hypointense areas on T1 and T2, with no suppression on fluid-attenuated inversion recovery and no restriction to diffusion. The patient underwent a left frontal craniotomy with pterional approach, and the lesion was removed microsurgically. CONCLUSION: Xanthogranulomatous reaction is rarely described in colloid cysts, which happens as a response to desquamation of epithelial lining, subsequent lipid accumulation, and as tissue inflammatory response to intracystic hemorrhage. Microsurgical resection is the treatment of choice. As compared to the plain colloid cyst, these lesions are difficult to fully excise as the inflammatory reaction to the xanthomatous material leads to adhesions to adjacent structures; therefore, the aspiration of cystic contents without spillage is advisable to achieve maximal resection of cyst walls.

6.
Surg Neurol Int ; 10: 120, 2019.
Article in English | MEDLINE | ID: mdl-31528456

ABSTRACT

BACKGROUND: Medulloblastoma is the most common malignant brain tumor in the pediatric population. Despite prognosis improvement in the past two decades, one-third of the patients still remain incurable. New evidence suggests that medulloblastoma comprises four distinct entities; therefore, treatment de-escalation is required. The aim of this article is to evaluate epidemiological data from patients treated at our institution. The primary objective is to analyze overall survival (OS) and event-free survival (EFS) and the secondary objective is to identify prognostic factor from this cohort. METHODS: We retrospectively analyzed 69 patients who underwent surgical resection for medulloblastoma among 423 children from the tumor registry data bank of Santo Antônio Children's Hospital from 1995 to 2016. Kaplan-Meier method and Cox regression analysis were used to identify OS, EFS, and prognostic factors. RESULTS: The 5-year OS and EFS rates found were 44.5% and 36.4%, respectively. The extent of resection and radiotherapy as adjuvant treatments was positively correlated to outcome while metastatic disease at diagnosis was negatively related to OS. Age younger than 3 years old did not have a worse outcome in our cohort. CONCLUSION: Similar results to population-based studies were found, but we still face difficulties due to living in a developing country. In the near future, we look forward to new diagnostic techniques that will enable us to classify medulloblastomas according to molecular subgroups.

7.
World Neurosurg ; 125: e966-e971, 2019 05.
Article in English | MEDLINE | ID: mdl-30763744

ABSTRACT

BACKGROUND: Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is an established treatment for patients with Parkinson disease. One adverse event is the development of postoperative confusion. The aim of this study was to report the incidence and associated factors of postoperative confusion after STN DBS surgery. METHODS: This was a retrospective cohort study by chart review of patients with Parkinson disease who underwent STN DBS in a Brazilian public academic hospital from January 2013 to October 2017. The primary outcome was the incidence of postoperative confusion. The association of the outcome and imaging and clinical variables was evaluated. RESULTS: Among 49 patients who underwent STN DBS for Parkinson disease, the incidence of postoperative confusion was 26.5% (95% confidence interval 15%-41.1%). Univariate analysis identified the following variables associated with development of confusion: age (63.2 ± 7.8 years vs. 55.4 ± 9.1 years, P = 0.009), disease duration (16.5 ± 5.1 years vs. 13.2 ± 4.2 years, P = 0.027), Charlson comorbidity index (2 [interquartile range 1-3] vs. 1 [0-1 interquartile range], P = 0.002), width of the third ventricle (5.4 ± 2.1 mm vs. 4 ± 1.6 mm, P = 0.018), and cella media index (5 ± 1 vs. 5.6 ± 0.8, P = 0.018). After adjustment, Charlson comorbidity index remained significant (adjusted relative risk 1.64, 95% confidence interval 1.17-2.3, P = 0.004). CONCLUSIONS: The incidence of postoperative confusion in this cohort was 26.5%. After analysis of confounding factors, the Charlson comorbidity index was significantly associated with postoperative confusion.


Subject(s)
Confusion/etiology , Deep Brain Stimulation/adverse effects , Parkinson Disease/therapy , Postoperative Complications/etiology , Aged , Cohort Studies , Confusion/epidemiology , Female , Humans , Incidence , Male , Middle Aged , Postoperative Complications/epidemiology , Retrospective Studies , Subthalamic Nucleus/surgery
8.
Arq Neuropsiquiatr ; 75(8): 523-532, 2017 Aug.
Article in English | MEDLINE | ID: mdl-28813082

ABSTRACT

OBJECTIVE: Correlate the middle cerebral artery bifurcation aneurysm morphology with the pre-operative and intra-operative risk of rupture. METHODS: Forty patients with 46 middle cerebral artery bifurcation aneurysms were treated microsurgically by the same surgeon. Aneurysms were classified according to shape and the Fisher test was applied to analyze the effect of morphology on the pre-operative and intra-operative rupture. RESULTS: Pre-operative and intra-operative ruptures were observed in 8/46 patients (17.4%) and 14/46 patients (30.4%) respectively. Thirty-two cases (69.6%) had no symptoms postoperatively, modified Rankin score (MRS) of 0; 6.5% had MRS of 1 (no significant disability); 13% had MRS of 2 (slight disability); 4.3% had moderately severe disability (MRS of 4); and there were 3 deaths (6.5%) post-operatively. The morphology was not directly related to the rupture rate. CONCLUSION: In general, ruptures are not affected by the morphology or the studied variables. Larger series are needed to validate these outcomes.


Subject(s)
Aneurysm, Ruptured/diagnostic imaging , Cerebral Angiography , Intracranial Aneurysm/surgery , Intraoperative Complications/surgery , Middle Cerebral Artery/surgery , Adolescent , Adult , Aged , Aneurysm, Ruptured/etiology , Aneurysm, Ruptured/surgery , Female , Humans , Intracranial Aneurysm/complications , Intracranial Aneurysm/diagnostic imaging , Intraoperative Complications/diagnostic imaging , Male , Middle Aged , Middle Cerebral Artery/diagnostic imaging , Preoperative Care , Risk Factors , Young Adult
9.
Arq. neuropsiquiatr ; 75(8): 523-532, Aug. 2017. tab, graf
Article in English | LILACS | ID: biblio-888311

ABSTRACT

ABSTRACT Objective Correlate the middle cerebral artery bifurcation aneurysm morphology with the pre-operative and intra-operative risk of rupture. Methods Forty patients with 46 middle cerebral artery bifurcation aneurysms were treated microsurgically by the same surgeon. Aneurysms were classified according to shape and the Fisher test was applied to analyze the effect of morphology on the pre-operative and intra-operative rupture. Results Pre-operative and intra-operative ruptures were observed in 8/46 patients (17.4%) and 14/46 patients (30.4%) respectively. Thirty-two cases (69.6%) had no symptoms postoperatively, modified Rankin score (MRS) of 0; 6.5% had MRS of 1 (no significant disability); 13% had MRS of 2 (slight disability); 4.3% had moderately severe disability (MRS of 4); and there were 3 deaths (6.5%) post-operatively. The morphology was not directly related to the rupture rate. Conclusion In general, ruptures are not affected by the morphology or the studied variables. Larger series are needed to validate these outcomes.


RESUMO Objetivo Correlacionar a morfologia do aneurisma da bifurcação da artéria cerebral média com o risco de ruptura pré-operatória e intra-operatória. Métodos 40 pacientes com 46 aneurismas de bifurcação da artéria cerebral média receberam tratamento microcirúrgico pelo mesmo cirurgião. Os aneurismas foram classificados de acordo com a morfologia e o teste de Fisher foi aplicado para analisar o efeito da morfologia sobre a ruptura pré-operatória e intra-operatória. Resultados As rupturas pré e intra-operatória foram observadas em 8/46 pacientes (17,4%) e 14/46 (30,4%) respectivamente. Trinta e dois casos (69,6%) não apresentaram sintomas pós-operatórios, pontuação de Rankin modificada (MRS) de 0, 6,5% tinham MRS de 1 (sem incapacidade significativa), 13% tinham MRS de 2 (leve incapacidade), 4,3% moderadamente grave (MRS de 4) e houve 3 óbitos (6,5%) durante o pós-operatório. A morfologia não estava diretamente relacionada à taxa de ruptura pré-operatória ou intra-operatória. Conclusão Em geral, as rupturas não são afetadas pela morfologia ou pelas variáveis estudadas. São necessárias séries maiores para validar esses resultados.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Young Adult , Cerebral Angiography , Intracranial Aneurysm/surgery , Aneurysm, Ruptured/diagnostic imaging , Middle Cerebral Artery/surgery , Intraoperative Complications/surgery , Preoperative Care , Intracranial Aneurysm/complications , Intracranial Aneurysm/diagnostic imaging , Risk Factors , Aneurysm, Ruptured/surgery , Aneurysm, Ruptured/etiology , Middle Cerebral Artery/diagnostic imaging , Intraoperative Complications/diagnostic imaging
10.
Arq Neuropsiquiatr ; 75(7): 424-428, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28746427

ABSTRACT

OBJECTIVE: To assess, by Rankin scale, the functional disability of patients who had a malignant middle cerebral artery (MCA) ischemic stroke, who underwent decompressive craniotomy (DC) within the first 30 days. METHODS: A cross-sectional study in a University hospital. Between June 2007 and December 2014, we retrospectively analyzed the records of all patients submitted to DC due to a malignant MCA infarction. The mortality rate was defined during the hospitalization period. The modified outcome Rankin score (mRS) was measured 30 days after the procedure, for stratification of the quality of life. RESULTS: The DC mortality rate was 30% (95% CI 14.5 to 51.9) for the 20 patients reported. The mRS 30 days postoperatively was ≥ 4 [3.3 to 6] for all patients thereafter. CONCLUSION: DC is to be considered a real alternative for the treatment of patients with a malignant ischemic MCA infarction.


Subject(s)
Decompressive Craniectomy/methods , Infarction, Middle Cerebral Artery/surgery , Cross-Sectional Studies , Decompressive Craniectomy/mortality , Female , Humans , Infarction, Middle Cerebral Artery/mortality , Length of Stay , Male , Middle Aged , Quality of Life , Retrospective Studies
11.
Arq. neuropsiquiatr ; 75(7): 424-428, July 2017. tab, graf
Article in English | LILACS | ID: biblio-888302

ABSTRACT

ABSTRACT Objective To assess, by Rankin scale, the functional disability of patients who had a malignant middle cerebral artery (MCA) ischemic stroke, who underwent decompressive craniotomy (DC) within the first 30 days. Methods A cross-sectional study in a University hospital. Between June 2007 and December 2014, we retrospectively analyzed the records of all patients submitted to DC due to a malignant MCA infarction. The mortality rate was defined during the hospitalization period. The modified outcome Rankin score (mRS) was measured 30 days after the procedure, for stratification of the quality of life. Results The DC mortality rate was 30% (95% CI 14.5 to 51.9) for the 20 patients reported. The mRS 30 days postoperatively was ≥ 4 [3.3 to 6] for all patients thereafter. Conclusion DC is to be considered a real alternative for the treatment of patients with a malignant ischemic MCA infarction.


RESUMO Objetivo Avaliar a capacidade funcional de pacientes com acidente vascular cerebral isquêmico no território da artéria cerebral média (ACM) submetidos à craniotomia descompressiva (CD) no período de 30 dias pela escala de Rankin. Métodos Estudo transversal em um hospital universitário. Entre junho de 2007 e dezembro de 2014, analisados retrospectivamente os registros de todos os pacientes submetidos a CD devido a enfarte maligno na ACM. A taxa de mortalidade foi definida durante o período de internação. O resultado da estratificação da qualidade de vida foi através da escala Rankin modificado (mRS) mensurado em 30 dias após o procedimento. Resultados A taxa de mortalidade CD foi de 30% (IC 95% 14,5-51,9) para os 20 pacientes relatados. A mRS 30 dias de pós-operatório foi => 4 [3,3-6] para todos os pacientes. Conclusão CD deve ser considerada uma alternativa real para o tratamento de pacientes com enfarte isquêmico no território da ACM.


Subject(s)
Humans , Male , Female , Middle Aged , Infarction, Middle Cerebral Artery/surgery , Decompressive Craniectomy/methods , Quality of Life , Cross-Sectional Studies , Retrospective Studies , Infarction, Middle Cerebral Artery/mortality , Decompressive Craniectomy/mortality , Length of Stay
13.
Cerebrovasc Dis Extra ; 7(1): 51-61, 2017.
Article in English | MEDLINE | ID: mdl-28359069

ABSTRACT

BACKGROUND: Decompressive hemicraniectomy (DHC) is a life-saving procedure for treatment of large malignant middle cerebral artery (MCA) strokes. Post-stroke epilepsy is an additional burden for these patients, but its incidence and the risk factors for its development have been poorly investigated. OBJECTIVE: To report the prevalence and risk factors for post-stroke seizures and post-stroke epilepsy after DHC for treatment of large malignant MCA strokes in a cohort of 36 patients. METHODS: In a retrospective cohort study of 36 patients we report the timing and incidence of post-stroke epilepsy. We analyzed if age, sex, vascular risk factors, side of ischemia, reperfusion therapy, stroke etiology, extension of stroke, hemorrhagic transformation, ECASS scores, National Institutes of Health Stroke Scale (NIHSS) scores, or modified Rankin scores were risk factors for seizure or epilepsy after DHC for treatment of large MCA strokes. RESULTS: The mean patient follow-up time was 1,086 days (SD = 1,172). Out of 36 patients, 9 (25.0%) died before being discharged. After 1 year, a total of 11 patients (30.6%) had died, but 22 (61.1%) of them had a modified Rankin score ≤4. Thirteen patients (36.1%) developed seizures within the first week after stroke. Seizures occurred in 22 (61.1%) of 36 patients (95% CI = 45.17-77.03%). Out of 34 patients who survived the acute period, 19 (55.9%) developed epilepsy after MCA infarcts and DHC (95% CI = 39.21-72.59%). In this study, no significant differences were observed between the patients who developed seizures or epilepsy and those who remained free of seizures or epilepsy regarding age, sex, side of stroke, presence of the clinical risk factors studied, hemorrhagic transformation, time of craniectomy, and Rankin score after 1 year of stroke. CONCLUSION: The incidence of seizures and epilepsy after malignant MCA infarcts submitted to DHC might be very high. Seizure might occur precociously in patients who are not submitted to anticonvulsant prophylaxis. The large stroke volume and the large cortical ischemic area seem to be the main risk factors for seizure or epilepsy development in this subtype of stroke.
.


Subject(s)
Decompressive Craniectomy/adverse effects , Epilepsy/epidemiology , Infarction, Middle Cerebral Artery/surgery , Seizures/epidemiology , Aged , Brazil/epidemiology , Decompressive Craniectomy/mortality , Disability Evaluation , Disease-Free Survival , Epilepsy/diagnosis , Epilepsy/mortality , Female , Hospital Mortality , Humans , Incidence , Infarction, Middle Cerebral Artery/diagnosis , Infarction, Middle Cerebral Artery/mortality , Kaplan-Meier Estimate , Male , Middle Aged , Retrospective Studies , Risk Assessment , Risk Factors , Seizures/diagnosis , Seizures/mortality , Time Factors , Treatment Outcome
14.
Surg Neurol Int ; 7(Suppl 12): S314-6, 2016.
Article in English | MEDLINE | ID: mdl-27274403

ABSTRACT

BACKGROUND: Congenital hemangiomas are benign vascular tumors, and the intracranial counterpart was described in very few cases. CASE DESCRIPTION: A newborn presented with an intracranial tumor associated with an arachnoid cyst, diagnosed by antenatal ultrasound at 37 weeks of gestation. Surgery was indicated due to increased head circumference and bulging fontanelle, and a complete resection of an extra-axial red-brown tumor was performed at the 3(rd) week of life. Microscopy revealed a hemangioma. CONCLUSION: Hemangioma is a rare differential diagnosis that must be considered in extra-axial intracranial tumors affecting infants and neonates. The radiological features are not helpful in differentiating from other tumors, and surgery is indicated when the diagnosis is uncertain or whenever there are signs of increased intracranial pressure.

16.
Acta Neurochir Suppl ; 120: 231-5, 2015.
Article in English | MEDLINE | ID: mdl-25366629

ABSTRACT

INTRODUCTION: This study was undertaken to determine variables that could predict, in the perioperative period of anterior communicating artery (ACom) aneurysms surgeries, the likelihood of postoperative sequelae and complications, after temporary arterial occlusion (TAO). PATIENTS AND METHODS: In a universe of 32 patients submitted to ACom aneurysm repair in the last 7 years, 21 needed TAO intraoperatively, and had their data examined retrospectively. RESULTS: Aneurysms larger than 7 mm were more likely to be treated with longer TAO time than small aneurysms, (p < 0.0001). There was no statistical correlation between time of occlusion and outcome. Age, Glasgow Coma Scale at initial evaluation, and Fisher scale at first CT scanning were independent factors of unfavorable outcome (p < 0.001). Meanwhile gender, tobacco addiction, obesity, arterial hypertension, dyslipidemia, location of TAO (A1 or A2), intraoperative rupture (IR) and the aneurysm size were not identified as independent prognostic factors.During follow-up period, two thirds of the patients had a favorable outcome, accomplishing normal daily life activities without major complications. Most patients developed clinical vasospasm (66.6 %), with 19 % of the patients harboring a severe disease. Delayed ischemic neurological deficit was observed in 28.5 %, without any statistical correlation to time of TAO or IR. CONCLUSION: TAO during ACom aneurysm repair does not seem to add more morbidities to the procedure, and is not an independent prognostic factor.


Subject(s)
Intracranial Aneurysm/surgery , Intraoperative Complications/etiology , Neurosurgical Procedures/adverse effects , Postoperative Complications/etiology , Vasospasm, Intracranial/etiology , Adult , Aged , Female , Follow-Up Studies , Glasgow Coma Scale , Humans , Intraoperative Complications/diagnosis , Male , Middle Aged , Neurosurgical Procedures/methods , Postoperative Complications/diagnosis , Predictive Value of Tests , Retrospective Studies , Treatment Outcome , Vasospasm, Intracranial/diagnosis , Young Adult
17.
J. bras. neurocir ; 23(4): 275-280, 2013.
Article in English | LILACS | ID: lil-699460

ABSTRACT

O estudo visa determinar os fatores prognósticos para sequelas e complicações perioperatórias nas cirurgias de aneurismas da artéria comunicante anterior (ACoA), secundários ou relacionados à clipagem temporária. Num universo de 92 pacientes operados de aneurisma da ACoA entre 2000 e 2013, 32 foram operados nos últimos sete anos. Destes, 21 foram submetidos à clipagem temporária durante a cirurgia para reparo do aneurisma. Aneurismas maiores que 7mm tiveram uma tempo estatisticamente maior de clipagem temporária que aqueles menores (22±5.7 vs 11.3±4.1, Teste-t, p <0.0001). Não se evidenciou correlação estatística entre o tempo de oclusão e o prognóstico (r=0.92, Pearson, p>0.08). Idade, Escala de Coma de Glasgow (ECG) da primeira avaliação, e Escala de Fisher da Tomografia de Crânio da entrada foram fatores de pior prognóstico (Glasgow Outcome Scale GOS ≤ 3) (regressão-cox, p<0.001). Idade maior que 50 anos, ECG menor que 13, e Fisher III ou IV resultaram em pior prognóstico. Por sua vez gênero, tabagismo, alcoolismo, obesidade, hipertensão arterial sistêmica, dislipidemia, localização da oclusão temporária, rotura trans-operatória do aneurisma e tamanho do aneurisma não foram identificados como fatores independentes de prognóstico. Durante seguimento pós-operatório, dois terços dos pacientes tiveram um prognóstico favorável (GOS≥ 4), retomando suas atividades de vida diária sem maiores dificuldades. Cinquenta e dois por cento dos pacientes evoluíram com hidrocefalia, a despeito da fenestração rotineira da lâmina terminalis, realizada em 71,4% dos procedimentos. A maioria dos pacientes desenvolveu vasoespasmo (66%), sendo 19% vasoespasmo severo. Sequela neurológica por isquemia tardia foi observada em 28,5% dos pacientes, secundária ao vasoespasmo grave, sem correlação estatística com o tempo de oclusão ou com ruptura aneurismática intraoperatória.


Subject(s)
Intracranial Aneurysm , Neurosurgery
18.
J. bras. neurocir ; 23(4): 301-315, 2013.
Article in Portuguese | LILACS | ID: lil-699468

ABSTRACT

Melhora significativa dos resultados do tratamento das Malformações Arteriovenosas (MAV) do sistema nervoso central tem sido observada, associada a avanços das modalidades de diagnóstico e tratamento. Os autores relatam esses avanços no diagnóstico e tratamento global integrado das MAV.


Subject(s)
Embolization, Therapeutic , General Surgery , Radiosurgery
19.
J. bras. neurocir ; 24(3): 208-211, 2013.
Article in English | LILACS | ID: lil-726516

ABSTRACT

O tratamento de aneurismas de arteria cerebral media (AACM) e a relação de sua morfologia com a probabilidade de rupturasão tópicos importantes na neurocirurgia vascular. Objetivo: Avaliar a correlação entre a morfologia desses aneurismas e 1)probabilidade de ruptura do aneurisma e 2) sua mobimortalidade. Métodos: Vinte e nove pacientes portadores de AACM nosegmento M1 (4 pacientes com aneurismas múltiplos) foram acompanhados / tratados por nossa equipe em uma única instituiçãopelos últimos 5 anos. Catorze aneurismas sofreram ruptura no momento da admissão e 15 foram diagnosticados acidentalmente.Através do formato e geometria, os aneurismas foram classificados e correlacionados com a taxa de ruptura e morbimortalidade.Resultados: Os aneurismas apresentaram medidas entre 7 e 10 mm de diâmetro (90%), sem diferença no tamanho entre os rotos enão-rotos. Pacientes cujos AACMs se romperam na admissão eram o triplo daqueles não-rotos com formato elíptico transverso ede pera invertida (21% vs 9%, p<0,05). Por outro lado, pacientes com AACMs não-rotos possuem aneurisma em formato de pera(36,3% vx 5,2%, p<0,001). Aneurismas com formato arredondado eram os mais frequentes, embora não fosse significativamentepropensos à ruptura. Conclusão: Embora a amostra seja pequena, concluímos que aneurismas com formato elíptico transversoe de pera invertida estavam mais associados com a ruptura que aqueles redondos ou em forma de pera.


Subject(s)
Intracranial Aneurysm , Neurosurgery
20.
J. vasc. bras ; 11(2): 114-122, abr.-jun. 2012. ilus
Article in Portuguese | LILACS | ID: lil-641657

ABSTRACT

CONTEXTO: O espaço infratentorial do crânio é uma região que possui complexa rede de artérias que vascularizam o tecido cerebelar e o tronco encefálico. Sua complexa anatomia tridimensional deve ser profundamente entendida pelo neurocirurgião vascular e pelo radiologista intervencionista. OBJETIVO: Descrever as principais artérias do espaço infratentorial e seu trajeto, bem como sua relação com a topografia das estruturas neurais. MÉTODOS: Foram estudados 30 cérebros humanos, fixados em formalina e 6 cabeças de cadáveres dissecadas, utilizando-se microscópico cirúrgico com 3X a 40X de aumento. Os cérebros e todas as cabeças foram injetados com siloxanos polimerizados ou polisiloxanos (silicone) colorido. As dissecções anatômicas foram documentadas utilizando-se técnica para obtenção de imagens tridimensionais (3D), objetivando a produção de impressões estereoscópicas. RESULTADOS: São descritos o trajeto, segmentos e ramos das artérias basilar, cerebelar superior, cerebelar anteroinferior, cerebelar posteroinferior e vertebral. CONCLUSÃO: A anatomia das artérias infratentoriais é complexa e as imagens estereoscópicas apresentadas são um importante instrumento de documentação, pois permitem uma noção de profundidade da anatomia estudada.


BACKGROUND: The infratentorial space is a region with a complex network of arteries supplying the cerebellum and brainstem. Its complex three-dimensional anatomy must be thoroughly understood by the vascular neurosurgeon and the interventional radiologist. OBJECTIVE: To describe the main arteries of the infratentorial space and its trajectory and its relationship to the topography of the neural structures. METHODS: We studied 30 formalin-fixed human brains and we also dissected 6 cadaver heads, using a surgical microscope with 3X to 40X magnification. The brains and all heads were injected with colored silicone. The anatomical dissections were documented with a three-dimensional method, aiming to produce stereoscopic prints. RESULTS: The neurovascular relationships, segments and branches of the basilar artery, superior cerebellar, anteroinferior cerebellar, cerebellar and posteroinferior vertebral are described. CONCLUSION: The microsurgical anatomy of the infratentorial arteries is complex and the stereoscopic images presented are an important tool for documentation.


Subject(s)
Humans , Cerebral Arteries/anatomy & histology , Cerebral Arteries/surgery , Vertebral Artery Dissection/classification , Cadaver
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