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1.
Arq. neuropsiquiatr ; 79(8): 705-715, Aug. 2021. tab, graf
Article in English | LILACS | ID: biblio-1339228

ABSTRACT

ABSTRACT Background: Meningiomas are the most frequent primary central nervous system (CNS) tumors. Their geographical and ethnic characteristics need to be known, in order to enable rational treatment. Objective: To investigate clinical and epidemiological aspects in a series of patients with meningiomas. Methods: Retrospective analysis on the demographic profile, location and histopathology of 993 patients with meningiomas (768 operated and 225 not operated). Results: Meningiomas represented 43.8% of the primary CNS tumors; 6.8% were multiple tumors (14.7% with neurofibromatosis 2) and 0.6% were radiation-induced tumors. The mean ages were 53.0 and 63.9 years for operated and non-operated patients and the female/male ratios were 3.2:1 and 6.3:1. Diagnosis was made later among females. The peak incidences were in the 6th and 7th decades respectively for operated and non-operated patients. The incidence was low at early ages and higher among patients aged 70+ years. The meningiomas were intracranial in 96.5% and most were WHO grade I (88.9%) and transitional. In the spinal canal (3.5%), they occurred mainly in the dorsal region (all grade I; mostly transitional). The racial distribution was 1.0% in Asian-Brazilians, 87% in Caucasians and 12% in African-Brazilians. 83.4% and 51.6% of the patients were estimated to be recurrence-free at 10 and 20 years, and the mortality rate was 3%. Conclusions: Most of the demographic data were similar to what has been observed in other western centers. Differences were higher incidence of meningiomas, female and older predominance in non-operated patients, predominance in Caucasian, and higher association with neurofibromatosis 2.


RESUMO Antecedentes: Meningiomas são os tumores mais frequentes do sistema nervoso central (SNC). Suas características étnicas e geográficas precisam ser conhecidas para o seu tratamento racional. Objetivo: Investigar aspectos clínicos e epidemiológicos de uma série de pacientes com meningiomas. Métodos: Análise retrospectiva demográfica de 993 pacientes com meningiomas (768 operados e 225 tratados conservadoramente) Resultados: Meningiomas constituíram 43.8% dos tumores primários do SNC. 0.8% deles eram múltiplos (14,7% com neurofibromatose 2) e 0,6% eram radioinduzidos. A idade média e o índice mulheres/homens foram respectivamente 53,0 e 63,9 anos e 3.2:1 e 6.3:1 para pacientes operados e não operados. O diagnóstico foi mais tardio em mulheres. Ocorreram picos de incidências na 6ª e na 7ª décadas respectivamente para pacientes operados e não operados. A incidência foi menor na infância e maior após 70 anos. Meningiomas predominaram no crânio (96.5%), a maioria grau I da OMS, subtipo transicional. Do total, 3.5% ocorreram no canal raquídeo, principalmente na região torácica, todos grau I, a maioria transicional. Em relação à distribuição racial, 1.0% dos meningiomas ocorreu em amarelos, 87% em brancos e 12% em negros. As taxas de sobrevida sem recorrência foram 83.4% e 51.6% em 10 e 20 anos e a mortalidade operatória foi 3%. Conclusões: A maioria dos dados demográficos observados foi similar aos de outros centros ocidentais. As diferenças observadas foram maior incidência, predominância em mulheres e idosos nos pacientes não operados e em caucasianos, e maior associação com neurofibromatose 2.


Subject(s)
Humans , Male , Female , Neurofibromatosis 2 , Meningeal Neoplasms/epidemiology , Meningioma/epidemiology , Retrospective Studies , Middle Aged , Neoplasm Recurrence, Local
2.
Mastology (Online) ; 30: 1-6, 2020.
Article in English | LILACS-Express | LILACS | ID: biblio-1121455

ABSTRACT

Introduction: Breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) is a rare subtype of CD30-positive and ALKnegative (anaplastic lymphoma kinase) T cell lymphoma, which can develop in the pericapsular fibrous tissue and the late seromas around breast implants. If BIA-ALCL is suspected, an adequate diagnostic flow is essential. Materials and methods: A flowchart of the procedures performed in the diagnostic investigation is discussed, associating a clinical case, and conducting a review on the topic. Results: In the assessment of late and recurrent periprosthetic seromas, prior communication from the surgeon and the pathologist is essential, aiming at the adequate collection and storage of the aspirated material. The material must be promptly fractionated for microbiological assessment by culture, immediate or transoperative cytologic assessment, immunophenotyping by flow cytometry (10 mL), direct cytopathological examination, and obtaining cell block material (50 mL). For flow cytometry, the material must be sent fresh, 70% alcohol or 10% buffered formalin can be added for the other procedures. If it is impossible to send the aspirated fluid to the laboratory in less than six hours, it can be temporarily stored in a refrigerator at 4°C. Immunophenotyping should be extensive, always assessing the expression of CD30 and ALK, regardless of cytological aspects. In cases of late and recurrent seromas in which BIA-ALCL is considered, even if initially discarded, it is suggested to perform capsulectomy with the removal of the prosthesis or careful clinical and laboratory monitoring. Conclusion: The diagnostic flowchart is essential, aiming at false-negative tests.

3.
Arq. neuropsiquiatr ; 73(9): 770-778, Sept. 2015. tab, ilus
Article in English | LILACS | ID: lil-757382

ABSTRACT

Atypical/anaplastic (World Health Organization (WHO) grades II and III) are less common and have poorer outcomes than benign meningiomas. This study aimed to analyze the outcome of patients with these tumors.Method Overall/recurrence-free survivals (RFS) and the Karnofsky Performance Scale of 52 patients with grades II (42) and III (9) meningiomas surgically treated were analyzed (uni/multivariate analysis).Results Total/subtotal resections were 60.8%/35.3%. Patients <60 years-old and grade II tumors had longer survival. Grade II tumors, total resection andde novo meningioma had better RFS (univariate analysis). Patients >60 years-old, de novo meningioma and radiotherapy had longer survival and patients <60 years-old and with grade II tumors had longer RFS (multivariate analysis). Recurrence rate was 51% (39.2% Grade II and 66.7% Grade III). Operative mortality was 1.9%.Conclusion Age <60 years-old, grade II tumors and de novomeningiomas were the main predictors for better prognosis among patients with grades II and III meningiomas.


Meningiomas atipicos/anaplásticos (graus II e III da World Health Organization (WHO)) são menos comuns e tem prognóstico pior que os benignos. Este estudo visa analisar o prognóstico de pacientes com estes tumores.Método Sobrevida/sobrevida livre de doença (SLD) e índice de Karnofsky de 52 pacientes com meningiomas graus II (42) e III (9) tratados cirurgicamente foram avaliados (análises uni/multivariada).Resultados Pacientes <60 anos e com tumores grau II tiveram sobrevida mais longa. Tumores grau II , ressecção total e meningioma de novotiveram melhor SLD (análise univariada). Pacientes >60 anos, meningiomade novo e radioterapia tiveram sobrevida mais longa e, pacientes <60 anos e com tumores grau II tiveram SLD mais longa (análise multivariada). Recidiva ocorreu em 51% (39.2% Graus II e 66,7% Graus III). A mortalidade operatória foi 1,9%.Conclusão Idade <60 anos, meningiomas grau II e de novo foram preditores de melhor prognóstico entre pacientes com meningiomas graus II/ III.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Meningeal Neoplasms/surgery , Meningioma/surgery , Brazil/epidemiology , Hospitals, Public , Meningeal Neoplasms/mortality , Meningioma/mortality , Prognosis , Retrospective Studies , Survival Analysis , Treatment Outcome , World Health Organization
4.
Arq. neuropsiquiatr ; 72(7): 528-537, 07/2014. tab, graf
Article in English | LILACS | ID: lil-714589

ABSTRACT

Objective: To analyze the clinical outcome of patients with foramen magnum (FM) meningiomas. Method: Thirteen patients (11 Feminine / 2 Masculine with FM meningiomas operated on through lateral suboccipital approach were studied. Clinical outcome were analyzed using survival (SC) and recurrence-free survival curves (RFSC). Results: All tumors were World Health Organization grade I. Total, subtotal and partial resections were acchieved in 69.2%, 23.1% and 7.7%, respectively, and SC was better for males and RFSC for females. Tumor location, extent of resection and involvement of vertebral artery/lower cranial nerves did not influence SC and RFSC. Recurrence rate was 7.7%. Operative mortality was 0. Main complications were transient (38.5%) and permanent (7.7%) lower cranial nerve deficits, cerebrospinal fluid fistula (30.8%), and transient and permanent respiratory difficulties in 7.7% each. Conclusions: FM meningiomas can be adequately treated in public hospitals in developing countries if a multidisciplinary team is available for managing postoperative lower cranial nerve deficits. .


Objetivo: Analisar as evoluções clínicas de 13 pacientes com meningiomas do forame magno (FM). Método: Foram estudados 13 pacientes com meningiomas do FM (11 Feminino / 2 Masculino) operados por abordagem suboccipital lateral. As evoluções clínicas foram analisadas usando curvas de sobrevida (SC) e de sobrevida livre de doença (RFSC). Resultados: Os 13 tumores eram Grau I da Organização Mundial de Saúde. Ressecções total, subtotal and parcial foram obtidas em 69,2%, 23,1 e 7,7%, respectivamente. A SC foi melhor para homens e a RFSC foi melhor para mulheres. Localização/ extensão da ressecção/envolvimento da artéria vertebral/nervos cranianos baixos não influenciaram a SC/RFSC. A taxa de recorrência foi 7,7%. A mortalidade operatória foi zero. As principais complicações foram déficits de nervos cranianos baixos transitórios (38,5%) e permanentes (7,7%); fístula de líquido cefalorraquidiano (30,8%) e dificuldades respiratórias transitórias e permanentes em 7,7% cada. Conclusões: Meningiomas do FM podem ser adequadamente tratados em hospitais públicos em países em desenvolvimento se houver uma equipe multidisciplinar para cuidar de déficits de nervos cranianos baixos pós-operatórios. .


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Foramen Magnum/surgery , Meningeal Neoplasms/surgery , Meningioma/surgery , Brazil , Follow-Up Studies , Foramen Magnum/pathology , Hospitals, Public , Magnetic Resonance Imaging , Meningeal Neoplasms/pathology , Meningioma/pathology , Neoplasm Grading , Neoplasm Recurrence, Local , Postoperative Complications , Retrospective Studies , Survival Analysis , Tomography, X-Ray Computed , Treatment Outcome
6.
Fisioter. pesqui ; 14(3): 6-11, set.-dez. 2007. ilus, tab, graf
Article in Portuguese | LILACS | ID: lil-506421

ABSTRACT

Corticosteróides sistêmicos em altas doses podem causar miopatia metabólica. O objetivo deste estudo foi avaliar, por meio de ensaios de tração, os efeitos da miopatia induzida por corticosteróides nas propriedades mecânicas do músculo diafragma de coelhos...


High doses of systemic corticosteroids might promote metabolic myopathy. The aim of this study was to assess, by means of traction assays, the effects of myopathy induced by systemic corticosteroids on mechanical features of the diaphragm muscle of rabbits...


Subject(s)
Animals , Female , Rabbits , Adrenal Cortex Hormones/administration & dosage , Diaphragm , Tensile Strength , Rabbits
7.
Arq. neuropsiquiatr ; 65(3b): 795-799, set. 2007. ilus, graf, tab
Article in English | LILACS | ID: lil-465182

ABSTRACT

BACKGROUND: Olfactory groove meningiomas comprise 4-10 percent of the intracranial meningiomas. Generally they give signs of brain compression due to great size they reach before diagnosis. In this study, the clinical outcome of patients with olfactory groove meningiomas surgically treated was analyzed. METHOD: 17 patients operated on from 1988-2006. Female: 16, Male: 1. Age: 19-76 years-old (mean=53.12± 13.11). Follow-up: 1-209 months (mean=51.07±12.73. Bifrontal/bifrontal-bi-orbital approaches were used. Outcome was analyzed using survival/recurrence-free Kaplan-Mayer curves. RESULTS:16 had WHO grade 1; one grade 2 meningiomas. Resection Simpson's grade 1 was in achieved in 64.7 percent, grade 2 in 29.4 percent and grade 3 in 5.9 percent. There was no recurrence during the follow-up. Global and operative mortality were 11.8 percent. Main postoperative complications were osteomielitis (11.8 percent) and pneumonia (5.9 percent). CONCLUSION: Extensive approaches allowed total resection of most olfactory groove meningiomas with no recurrence during the follow-up, but operative mortality and local complications were high.


INTRODUÇÃO: Os meningiomas da goteira olfatória constituem 4-10 por cento dos meningiomas intracranianos. Geralmente eles causam sinais de compressão do tronco cerebral porque atingem grandes tamanhos antes do diagnóstico. Neste estudo foram analisadas os resultados do tratamento cirúrgico de pacientes com meningiomas da goteira olfatória. MÉTODO: 17 pacientes operados de 1988-2006. Mulheres: 16. Homens: 1. Idade: 19-76 anos (média=53,12±13,11). Seguimento: 1-209 meses (média=51,07±12,73. Foram utilizados acessos bifrontal/bifrontal bi-orbital. A evolução clinica foi analisada usando curvas de sobrevida e de sobrevida livre de doença de Kaplan-Mayer. RESULTADOS: 16 pacientes tinham meningioma WHO grau 1; um tinha meningioma grau 2. Ressecção Simpson grau 1 foi obtida em 64.7 por cento, grau 2 em 29.4 por cento e grau 3 em 5.9 por cento. Não houve recidiva durante o seguimento. A mortalidade global e a pós-operatória foram 11.8 por cento. As principais complicações pós-operatórias foram osteomielite (11.8 por cento) e pneumonia (5.9 por cento). CONCLUSÃO: Abordagens extensas possibilitaram ressecção total da maioria dos meningiomas da goteira olfatória sem recidiva durante o seguimento, mas a mortalidade operatória e as complicações locais foram altas.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Meningeal Neoplasms/surgery , Meningioma/surgery , Craniotomy/methods , Follow-Up Studies , Meningeal Neoplasms/mortality , Meningioma/mortality , Neoplasm Staging , Postoperative Complications , Retrospective Studies , Survival Analysis , Treatment Outcome
8.
Arq. neuropsiquiatr ; 61(3A): 659-662, Sept. 2003. ilus
Article in English | LILACS | ID: lil-345782

ABSTRACT

Meningiomas limited to the internal auditory canal (IAC) are rare. Acoustic neuroma is usually the diagnosis made when a tumor is found in this location because of its higher frequency. We report on a 58 year-old woman with a meningioma arising from the IAC and the difficulty to establish the pre-surgical diagnosis, based on clinical and radiological features. The perioperative suspicion and confirmation are very important to deal with the dura and bone infiltration in order to reduce tumor recurrence


Subject(s)
Humans , Female , Middle Aged , Ear Canal , Ear Neoplasms , Meningioma , Neuroma, Acoustic , Diagnosis, Differential , Ear Neoplasms , Meningeal Neoplasms , Meningioma , Neuroma, Acoustic
9.
Medicina (Ribeiräo Preto) ; 34(2): 154-169, abr.-jun.2001. ilus
Article in Portuguese | LILACS | ID: lil-316455

ABSTRACT

A presente revisäo aborda um ponto específico dentro da sinapse, provavelmente o mais crucial: as interações moleculares entre proteínas da membrana das vesículas sinápticas e da membrana plasmática pré-sináptica. Uma linguagem molecular muito precisa permite a fusäo entre as membranas da vesícula sináptica e a plasmática, fusäo que libera o neurotransmissor contido na vesícula para a fenda sináptica. A vesícula sináptica foi alvo, nos últimos anos, de uma verdadeira dissecçäo molecular. É a organela celular com a mais completa descriçäo estrutural e cinética de seus componentes protéicos. A descoberta de famílias de proteínas homólogas, presentes em todos os tipos celulares eucariotos, como a Rab e a SNARE (SNAP receptors), demonstrou que o ciclo da vesícula sináptica é uma interaçäo entre sistemas protéicos, universais e específicos, de regulaçäo do tráfego vesícular e de fusäo de membranas lipídicas. O endereçamento e o controle do fluxo das estruturas precursoras das vesículas sinápticas até o terminal sináptico säo realizados pela família Rab de pequenas GTPases. As proteínas da superfamília das kinesinas säo as responsáveis pela açäo mecânica no transporte anterógrado das estruturas precursoras, ao longo dos microtúbulos do citoesqueleto axonal. As proteínas SNARE realizam a fusäo das vesículas com a membrana do terminal pré-sináptico. A proteína sinaptotagmina controla a formaçäo do complexo SNARE em um modo dependente de cálcio. Embora já se tenha conhecimento da maior parte das proteínas envolvidas no ciclo da vesícula sináptica, tem-se ainda que elucidar muitas das funções e interrelações entre elas


Subject(s)
Humans , Neurotransmitter Agents , Synapses , Synaptic Vesicles/physiology , Origin of Life , Endocytosis , Exocytosis , Protein Transport
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