Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 8 de 8
Filter
1.
Preprint in Portuguese | SciELO Preprints | ID: pps-4131

ABSTRACT

Background: Intracranial meningioma is the most frequent tumor of the central nervous system and immunohistochemical markers are important to aid in targeted therapy and prognosis. Objective: To evaluate the expression of cyclin D1 and c-MYC markers in intracranial meningiomas and to correlate it with the aggressiveness and recurrence of these tumors. Method: Retrospective, observational, cross-sectional study using data from the medical records of patients diagnosed with intracranial meningioma who were hospitalized and underwent surgical resection. Epidemiological, clinical and radiological data were collected and recorded. Immunohistochemistry for cyclin D1 and cMYC markers was performed on all samples. The data regarding the histological grade of the tumors were crossed with the result obtained by immunostaining. Results: 51 patients were included (72.5% women and 27.5% men) with a mean age of 53.5 years. Headache was the most common symptom and tumors located at the base of the skull accounted for 53% of cases. Grade I meningiomas were detected in 58.8%, grade II in 29.4% and grade III in 9.8%. Tumor recurrence was observed in two cases (3.9%) and disease-free patients corresponded to 49%. The mean follow-up time was 798 days (13-2267). Cyclin D1 was identified in 100% of meningiomas and the intensity of its expression was weak in 52.4% of grade I lesions, moderate in 50% of grade II tumors and strong in 100% of grade III tumors (p<0.001). c-MYC was identified in 17.7% (4.7% grade I, 66.7% grade II and 100% grade III) and its expression was weak in 50% in grade II and moderate in 100% in grade III (p<0.001). The presence of markers had no statistically significant relationship with patient outcomes. Conclusion: Cyclin D1 was expressed in all samples of meningiomas and the c-MYC was expressed in 18% of cases. The higher the histological grade, the more intense was the expression of the markers. There was no evidence of a relationship between the markers and tumor recurrence.


Racional: Meningioma intracraniano é o tumor mais frequente do sistema nervoso central e marcadores imunoistoquímicos são importantes para auxiliar na terapia alvo e prognóstico. Objetivo: Avaliar a expressão dos marcadores ciclina D1 e c-MYC em meningiomas intracranianos e correlacioná-la com a agressividade e recorrência desses tumores. Método: Estudo retrospectivo, observacional, transversal utilizando dados dos prontuários de pacientes com diagnóstico de meningioma intracraniano que foram internados e submetidos à ressecção cirúrgica. Os dados epidemiológicos, clínicos e radiológicos foram coletados e anotados. Foi realizada imunoistoquímica para os marcadores ciclina D1 e c-MYC em todas as amostras. Os dados referentes ao grau histológico dos tumores foram cruzados com o resultado obtido pela imunomarcação. Resultados: Foram incluídos 51 pacientes (72,5% mulheres e 27,5% homens) com média de 53,5 anos. Cefaleia foi o sintoma mais comum e tumores localizados na base do crânio representaram 53% dos casos. Meningiomas grau I foram detectados em 58,8%, grau II em 29,4% e grau III em 9,8%. Recidiva tumoral foi observada em dois casos (3,9%) e pacientes livres de doença corresponderam a 49%. A média do tempo de seguimento foi de 798 dias (13-2267). A ciclina D1 foi identificada em 100% dos meningiomas e a intensidade de sua expressão foi fraca em 52,4% das lesões grau I, moderada em 50% 2 dos tumores grau II e forte em 100% dos tumores grau III (p<0,001). c-MYC foi identificado em 17,7% (4,7% grau I, 66,7% grau II e 100% grau III) e sua expressão foi fraca em 50% no grau II e moderada em 100% do grau III (p<0,001). A presença dos marcadores não teve relação estatisticamente significativa com o desfecho dos pacientes. Conclusão: A ciclina D1 apresentou expressão em todas as amostras de meningiomas e o marcador cMYC em 18% dos casos. Quanto maior o grau histológico mais intensa foi a expressão dos marcadores. Não se evidenciou relação dos marcadores com a recorrência tumoral.

2.
World Neurosurg ; 84(6): 1747-51, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26216705

ABSTRACT

OBJECTIVE: To analyze the impact of the introduction of Micro-Doppler vascular (MDV) as a method of cerebral blood flow analysis during microsurgical clipping of intracranial aneurysms to check the partial occlusion of the aneurysm and the occurrence of stenosis by comparing these results with those provided by the postoperative digital subtraction angiography (DSA) scan as well as the occurrence of ischemic infarction on the postoperative computed tomography (CT) images. PATIENTS AND METHODS: We reviewed retrospectively the last 50 patients operated on before the introduction of the MDV (group 1) compared with the first 50 patients operated on using this technique (group 2). RESULTS: Nine (18%) of the 50 patients evaluated in the group 1 showed a new hypodensity in the postoperative CT images, whereas only 2 (4%) patients showed infarction in the group 2 (P = 0.02). In addition, in the group 1, 10 (20%) patients presented unexpected findings on DSA images (residual aneurysms, stenosis, and arterial occlusion), whereas in the group 2, those unexpected DSA findings were observed in only 3 (6%) patients (P = 0.023). CONCLUSION: MDV is an excellent method for cerebral blood flow assessment during the microsurgical clipping of intracranial aneurysms, reducing the unexpected angiographic results (residual aneurysms, stenosis, and arterial occlusion), as well as reducing the incidence of ischemic infarction on postoperative CT images, evidence of the positive impact of this method in the microsurgical treatment of intracranial aneurysms.


Subject(s)
Brain Ischemia/complications , Brain Ischemia/diagnostic imaging , Cerebrovascular Circulation , Intracranial Aneurysm/surgery , Stroke/diagnosis , Stroke/prevention & control , Ultrasonography, Doppler, Transcranial , Vascular Surgical Procedures/adverse effects , Adult , Aged , Angiography, Digital Subtraction , Brain Ischemia/etiology , Cerebral Angiography , Female , Humans , Incidence , Intracranial Aneurysm/diagnostic imaging , Intracranial Aneurysm/physiopathology , Male , Microsurgery , Middle Aged , Prospective Studies , Retrospective Studies , Risk , Stroke/diagnostic imaging , Stroke/etiology , Subarachnoid Hemorrhage/etiology , Subarachnoid Hemorrhage/prevention & control , Tomography, X-Ray Computed , Ultrasonography, Doppler, Transcranial/methods
3.
Coluna/Columna ; 10(4): 290-292, 2011. ilus
Article in Portuguese | LILACS | ID: lil-610638

ABSTRACT

OBJETIVO: Avaliar a incidência de trauma raquimedular causado por projétil de arma de fogo nos pacientes atendidos no pronto socorro de um hospital de Curitiba (PR). MÉTODOS: Estudo retrospectivo, realizado no período de fevereiro de 2005 a julho de 2008, incluindo todos os pacientes, vitimas de lesão na coluna vertebral causada por projétil de arma de fogo (n = 54). RESULTADOS: A grande maioria dos pacientes acometidos é do sexo masculino e em idade produtiva, com média de 27,18 anos. O segmento mais afetado foi a coluna torácica, com ferimentos transfixantes e lesão ASIA A (lesão completa). A maioria dos casos foi tratada de forma conservadora. O período da semana em que houve maior incidência foi o fim e semana, com predomínio do sábado e da sexta-feira. O motivo mais comum foi assalto. CONCLUSÃO: São lesões com alto impacto no custo de saúde pública e de previdência, uma vez que são lesões de alta taxa de morbidade e acometimento predominante de pessoas em faixa etária produtiva.


OBJECTIVE: To evaluate the incidence of spinal cord injury caused by firearm projectile in patients admitted to the emergency room of a hospital in Curitiba (PR). METHODS: This retrospective study from February 2005 to July 2008 including all victims of spinal injury caused by firearm projectile (n=54). The data were analyzed descriptively. RESULTS: The vast majority of patients are male and of working age, with an average of 27.18 years. The thoracic spine was the most affected segment, with transfixing injury and ASIA A (complete lesion). Most cases were treated conservatively. The period of the week where there was a higher incidence was the weekend, mostly on Saturday and Friday. The most common reason was armed robbery. CONCLUSION: These are lesions with a high impact on the cost of public health and social security, as are injuries that result in high morbidity and involve predominantly people in the productive age group.


OBJETIVO: Evaluar la incidencia del traumatismo raquimedular causado por proyectil de arma de fuego en pacientes atendidos en la sala de emergencias de un hospital en Curitiba (Paraná). MÉTODOS: Estudio retrospectivo, realizado en el período de febrero 2005 a julio de 2008, incluyendo a todos los pacientes víctimas de lesión medular en la columna vertebral causada por un proyectil de arma de fuego (n = 54 pacientes). RESULTADOS: La gran mayoría de los pacientes son varones y en edad de trabajar, con un promedio de 27,18 años. El sector más afectado ha sido la columna torácica, con heridas transfixiantes y ASIA A (lesión medular completa). La mayoría de los casos fue tratada de forma conservadora. El período de la semana, donde había una mayor incidencia fue el fin de semana, con predominio del sábado y el viernes. La razón más frecuente fue por asalto. CONCLUSIÓN: Se trata de lesiones con un alto impacto en el costo de la salud pública y la Seguridad Social, considerando que son lesiones con una alta tasa de morbilidad y afectan predominante a personas en el grupo de edad productiva.


Subject(s)
Multiple Trauma , Spine , Wounds, Gunshot
4.
J. bras. neurocir ; 21(3): 187-192, 2010.
Article in Portuguese | LILACS | ID: lil-579601

ABSTRACT

Introdução: A aplasia cútis congênita é uma doença rara que apresenta incidência de 1 a cada 10.000 nascimentos. Uma taxa de mortalidade de 20% tem sido relatada, principalmente devido a hemorragia ou meningite naqueles pacientes com envolvimento craniano. Objetivo: Relatar o caso de um paciente e realizar revisão de literatura sobre o assunto. Relato de caso:Paciente do sexo feminino nascida de parto cesáreo, com 37semanas de gestação. A doença foi diagnosticada intra-útero por meio de exames de imagem (ultra-sonografia obstétrica e ressonância magnética fetal). Nas primeiras 48 horas de vida,a recém-nascida foi submetida a procedimento cirúrgico como intuito de reparar a lesão. Evoluiu com complicações tardias,como fístula liquórica, meningite e convulsões. Aos dois anos de idade, foi a óbito em decorrência de sepse de foco pulmonar. Conclusão: Aplasia cútis congênita é uma doença rara, que pode atingir somente couro cabeludo, mas também apresentar-se com ausência de parte da calota craniana, o que aumenta a mortalidade devido ao maior risco de complicações como fístula liquórica, meningoencefalite e sangramento.


Subject(s)
Female , Pregnancy , Ectodermal Dysplasia , Scalp
5.
Arq Bras Endocrinol Metabol ; 50(5): 884-92, 2006 Oct.
Article in Portuguese | MEDLINE | ID: mdl-17160212

ABSTRACT

The aim of this retrospective study was to evaluate the results of transsphenoidal surgery in a group of patients with acromegaly who were operated by the same neurosurgeon. Our results were compared to those from a cumulative meta-analysis of 10 series (1,632 patients) published between 1992 and 2005. We followed 28 patients (17M/11F; 44.1 +/- 12.7 yr; 27 with macroadenomas; 86% being invasive) during 21.4 +/- 17.6 months after treatment. Patients were classified according to disease activity as follows: 1) controlled (CD): basal or mean GH < 2.5 ng/ml or nadir GH (OGTT) < 1 ng/ml and normal IGF-1; 2) uncontrolled (UCD): basal or mean GH > 2.5 ng/ml or nadir GH > 1 ng/ml and elevated IGF-1; 3) inadequately controlled (ICD): normal GH and elevated IGF-1 or elevated GH and normal IGF-1. After surgery, GH levels decreased from 61.7 +/- 101.1 ng/ml to 7.2 +/- 13.7 ng/ml (p< 0.001) and mean IGF-1 from 673.1 +/- 257.7 ng/ml to 471.2 +/- 285 ng/ml (p= 0.01). Biochemical remission rate was 57% [10 (35.5%) patients with CD and 6 (21.5%) with ICD], similar to the mean remission rate observed in the meta-analysis of surgical outcome of macroadenomas. Seven of 28 patients were submitted to surgical re-intervention (4 had been previously operated elsewhere and 3 by our neurosurgeon), with CD observed in 5 (71.5%) on follow-up. Cavernous sinuses invasion was more prevalent in UCD and ICD, whereas infundibular stalk deviation occurred only in patients with UCD. Remission rate was significantly higher in series where all surgical procedures were performed by the same surgeon (66% vs. 49%; p< 0.05). Thus, the surgeon's experience significantly improves the surgical outcome in acromegaly, especially in patients harboring large and invasive tumors, and re-intervention performed by an experienced surgeon should be considered in the algorithms for clinical management of this disease.


Subject(s)
Acromegaly/surgery , Adenoma/surgery , Growth Hormone-Secreting Pituitary Adenoma/surgery , Neurosurgical Procedures/standards , Acromegaly/blood , Acromegaly/pathology , Adenoma/blood , Adenoma/pathology , Adult , Aged , Biomarkers/analysis , Epidemiologic Methods , Female , Glucose Tolerance Test , Growth Hormone-Secreting Pituitary Adenoma/blood , Growth Hormone-Secreting Pituitary Adenoma/pathology , Human Growth Hormone/blood , Human Growth Hormone/metabolism , Humans , Insulin-Like Growth Factor I/analysis , Male , Middle Aged , Neoplasm Invasiveness/pathology , Remission Induction , Sphenoid Bone , Treatment Outcome
6.
Arq. bras. endocrinol. metab ; 50(5): 884-892, out. 2006. graf, ilus
Article in Portuguese, English | LILACS | ID: lil-439070

ABSTRACT

Avaliamos retrospectivamente os resultados da cirurgia transesfenoidal num grupo de acromegálicos operados por um único neurocirurgião, comparando-os com uma meta-análise cumulativa de 10 séries (1.632 pacientes) publicadas entre 1992-2005. Estudamos 28 pacientes (17M/11F; 44,1 ± 12,7 anos; 27 com macroadenomas, sendo 86 por cento invasivos), acompanhados por 21,4 ± 17,6 meses após a cirurgia; eles foram classificados de acordo com a atividade da acromegalia em: 1) doença controlada (DC): GH basal ou médio < 2,5 ng/ml ou GH nadir no TTOG < 1ng/ml e IGF-1 normal; 2) não controlada (DNC): GH basal ou médio > 2,5 ng/ml ou nadir no TTOG > 1 ng/ml e IGF-1 elevado; 3) inadequadamente controlada (DIC): GH normal e IGF-1 elevado ou GH elevado e IGF-1 normal. Após a cirurgia, os níveis de GH reduziram de 61,7 ± 101,1 ng/ml para 7,2 ± 13,7 ng/ml (p< 0,001), e os de IGF-1 de 673,1 ± 257,7 ng/ml para 471,2 ± 285 ng/ml (p= 0,01). A taxa de remissão bioquímica foi de 57 por cento [10 pacientes (35,5 por cento) com DC e 6 (21,5 por cento) com DIC], similar àquela obtida na meta-análise de cirurgias de macroadenomas. Sete dos 28 pacientes foram submetidos à re-intervenção (4 operados em outro hospital e 3 pelo nosso neurocirurgião), sendo 5 (71,5 por cento) classificados como DC no pós-operatório. Invasão de seio cavernoso foi mais prevalente nos DNC e DIC, e desvio de haste hipofisária no grupo DNC. A taxa de remissão foi maior nas séries em que apenas um único cirurgião realizou os procedimentos (66 por cento vs. 49 por cento; p< 0,05). Em conclusão, esses dados comprovam que a experiência do neurocirurgião pode aumentar significativamente as taxas de remissão do tratamento cirúrgico da acromegalia, especialmente em tumores maiores e mais invasivos, e que a re-intervenção realizada por cirurgião experiente deve ser considerada nos algoritmos de abordagem terapêutica desta doença.


The aim of this retrospective study was to evaluate the results of transsphenoidal surgery in a group of patients with acromegaly who were operated by the same neurosurgeon. Our results were compared to those from a cumulative meta-analysis of 10 series (1,632 patients) published between 1992­2005. We followed 28 patients (17M/11F; 44.1 ± 12.7 yr; 27 with macroadenomas; 86 percent being invasive) during 21.4 ± 17.6 months after treatment. Patients were classified according to disease activity as follows: 1) controlled (CD): basal or mean GH < 2.5 ng/ml or nadir GH (OGTT) < 1 ng/ml and normal IGF-1; 2) uncontrolled (UCD): basal or mean GH > 2.5 ng/ml or nadir GH > 1 ng/ml and elevated IGF-1; 3) inadequately controlled (ICD): normal GH and elevated IGF-1 or elevated GH and normal IGF-1. After surgery, GH levels decreased from 61.7 ± 101.1 ng/ml to 7.2 ± 13.7 ng/ml (p< 0.001) and mean IGF-1 from 673.1 ± 257.7 ng/ml to 471.2 ± 285 ng/ml (p= 0.01). Biochemical remission rate was 57 percent [10 (35.5 percent) patients with CD and 6 (21.5 percent) with ICD], similar to the mean remission rate observed in the meta-analysis of surgical outcome of macroadenomas. Seven of 28 patients were submitted to surgical re-intervention (4 had been previously operated elsewhere and 3 by our neurosurgeon), with CD observed in 5 (71.5 percent) on follow-up. Cavernous sinuses invasion was more prevalent in UCD and ICD, whereas infundibular stalk deviation occurred only in patients with UCD. Remission rate was significantly higher in series where all surgical procedures were performed by the same surgeon (66 percent vs. 49 percent; p< 0.05). Thus, the surgeon's experience significantly improves the surgical outcome in acromegaly, especially in patients harboring large and invasive tumors, and re-intervention performed by an experienced surgeon should be considered in the algorithms for clinical management of this disease.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Acromegaly/surgery , Adenoma/surgery , Growth Hormone-Secreting Pituitary Adenoma/surgery , Neurosurgical Procedures/standards , Acromegaly/blood , Acromegaly/pathology , Adenoma/blood , Adenoma/pathology , Biomarkers/analysis , Epidemiologic Methods , Glucose Tolerance Test , Growth Hormone-Secreting Pituitary Adenoma/blood , Growth Hormone-Secreting Pituitary Adenoma/pathology , Human Growth Hormone/blood , Human Growth Hormone , Insulin-Like Growth Factor I/analogs & derivatives , Neoplasm Invasiveness/pathology , Remission Induction , Sphenoid Bone , Treatment Outcome
7.
Radiol. bras ; 28(1): 35-39, jan.-fev. 1995. ilus
Article in Portuguese | LILACS | ID: lil-423034

ABSTRACT

Os autores apresentam um caso de meningeoma intraventricular situado no trígono do ventrículo lateral direito. O diagnóstico radiológico da lesão tumoral foi baseado na tomografia computadorizada e na angiografia cerebral. Após a ressecção cirúrgica o tumor foi submetido a exame anatomopatológico, que comprovou a natureza da lesão.


Subject(s)
Adult , Humans , Female , Convulsive Therapy , Meningioma/diagnosis , Cerebral Ventricle Neoplasms/diagnosis , Cerebral Ventricle Neoplasms/physiopathology , Tomography, X-Ray Computed
8.
Radiol. bras ; 22(3): 137-40, jul.-set. 1989. ilus
Article in Portuguese | LILACS | ID: lil-80030

ABSTRACT

Os autores fazem uma breve revisäo bibliográfica e relatam um caso de osteopetrose tardia diagnosticada por acaso no Serviço de Radiologia do Hospital de Clínicas - UFPR, uma vez que o paciente em questäo näo apresentava nenhum sintoma clínico. Os achados radiológicos que caracterizam a osteopetrose e a escassez de sinais clínicos confirmam tratar-se da forma tardia desta doença rara. Além disso, o paciente tinha já 74 anos


Subject(s)
Aged , Humans , Male , Osteopetrosis , Tomography, X-Ray Computed
SELECTION OF CITATIONS
SEARCH DETAIL
...