Arnon Alves - Academia.edu (original) (raw)
Papers by Arnon Alves
Brazilian Journal Of Pain, 2020
São Paulo Medical Journal, 2021
Introduction: COVID-19 affects several vital organs, including the brain, and can cause neurologi... more Introduction: COVID-19 affects several vital organs, including the brain, and can cause neurological manifestations. Objective: To characterize the neurological manifestations of hospitalized patients with laboratory confirmation of COVID-19, between May and August, 2020. Design and setting: Observational study at Veredas Hospital and University Hospital Professor Alberto Antunes in Alagoas, Brazil. Methods: Socio-demographic data, infectious and neurological symptoms, risk factors for neurological and infectious diseases, clinical history, treatment instituted and outcome of patients were collected. Results: We included 30 patients with a mean age of 61.05 ± 18.65 years, 70% were female. The average between the onset of COVID-19 symptoms and hospital admission was 10 ± 9.7 days. Systemic arterial hypertension (66.7%) and diabetes mellitus (63.3%) were the main comorbidities. Cough, fever (60%) and dyspnea (56.7%) stood out in general symptoms. The most frequent neurological symptom...
Brazilian Journal Of Pain
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery, 2016
Pneumoventricle and liquoric fistula are possible complications of traumatic brain injury (TBI), ... more Pneumoventricle and liquoric fistula are possible complications of traumatic brain injury (TBI), the main cause of morbimortality related to trauma in Brazil. Liquoric fistulae are more common after direct trauma with skull base fractures. However, pneumoventricle is rare and occurs due to excessive cerebrospinal fluid (CSF) drainage in the presence of a poorly compliant ventricle system, resulting in the influx of air to its interior. The pathophysiology of tension pneumoventricle remains uncertain. However, the traumatic cause is certain and multiple bone fractures of the face and liquoric fistula may contribute to the process. If symptomatic, the tension pneumoventricle can cause rapid clinical deterioration. The authors aim to report a rare case of post-TBI tension pneumoventricle with complete resolution and without signs of recurrence of the liquoric fistula after surgical treatment.
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery
ResumoOs cistos epidermoides constituem lesões congênitas, benignas e raras, que correspondem a c... more ResumoOs cistos epidermoides constituem lesões congênitas, benignas e raras, que correspondem a cerca de 0,2% a 1,8% de todos os tumores intracranianos, sendo que em apenas 5% dos casos localizam-se no quarto ventrículo. Apesar de sua gênese na vida intrauterina, são geralmente diagnosticados entre a terceira e quinta década de vida em decorrência de seu padrão de crescimento muito lento. A imagem ponderada pela difusão da ressonância magnética é fundamental para a formulação do diagnóstico. O tratamento ideal consiste no esvaziamento do conteúdo cístico com ressecção completa da cápsula. Neste trabalho, é descrito um caso de uma paciente de 31 anos de idade com síndrome cerebelar, evoluindo com síndrome de hipertensão intracraniana. A sintomatologia era decorrente de hidrocefalia obstrutiva por cisto epidermoide localizado no interior do quarto ventrículo, confirmado pela anatomia patológica.
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery, Aug 24, 2017
Epidermoid cysts constitute congenital, benign and rare lesions, corresponding to $ 0.2% to 1.8% ... more Epidermoid cysts constitute congenital, benign and rare lesions, corresponding to $ 0.2% to 1.8% of all intracranial tumors. Only 5% of the cases are located in the fourth ventricle. Despite their genesis in intrauterine life, they are usually diagnosed between the third and fifth decades of life due to their very slow growth pattern. The image weighted by the diffusion of the magnetic resonance is essential to establish the diagnosis. The ideal treatment consists of emptying the cystic content with complete capsule resection. In the present work, we report the case of a 31-year-old female with cerebellar syndrome that evolved with intracranial hypertension. The symptomatology was due to an obstructive hydrocephalus by an epidermoid cyst located inside the fourth ventricle, which was confirmed by the pathological anatomy.
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery, Nov 17, 2016
Introduction Aneurysmal bone cysts (ABCs) are pseudotumoral bone lesions of unknown etiology that... more Introduction Aneurysmal bone cysts (ABCs) are pseudotumoral bone lesions of unknown etiology that are also hypervascularized, benign, and locally destructive. They are rare in the base of the skull. The present case report describes a case of aneurysmal bone cyst in the sella turcica. Case Report The present study was developed at the department of neurosurgery of the Hospital Universitário Professor Alberto Antunes of the Universidade Federal de Alagoas (HUPAA-AL, in the Portuguese acronym), Maceió, state of Alagoas, Brazil, and is accompanied by a review of the literature from the PubMed database. A 17-year-old female patient with bitemporal hemianopia and intense left hemicranial headache associated with symptoms from the cranial nerves contained in the cavernous sinus. Neuroimaging evidenced a large lesion in the suprasellar region with calcification foci, sellar erosion, and extension to the cavernous sinus. The patient was submitted to a partial lesion resection and the histopathological analysis showed an aneurysmal bone cyst. Conclusion A rare case of intracranial aneurysmal bone cyst, with the important differential diagnosis from pituitary adenoma. Resumo Introdução Cistos ósseos aneurismáticos (COAs) são lesões ósseas pseudotumorais, de etiologia desconhecida, hipervascularizadas, benignas, localmente destrutivas. Cistos ósseos aneuristmáticos são raros na topografia da base do crânio. O objetivo do presente relato de caso é descrever um caso de cisto ósseo aneurismático localizado na sela túrcica. Relato de caso O caso foi acompanhado no Serviço de Neurocirurgia do Hospital Universitário Professor Alberto Antunes da Universidade Federal de Alagoas (HUPAA-AL), Maceió, AL, Brasil, e sua descrição foi feita conforme dados encontrados em revisão de literatura realizada por meio do banco de dados PubMed. Paciente do sexo feminino, 17 anos, com hemianopsia bitemporal e intensa cefaleia hemicraniana esquerda
Brazilian Journal Of Pain, 2020
São Paulo Medical Journal, 2021
Introduction: COVID-19 affects several vital organs, including the brain, and can cause neurologi... more Introduction: COVID-19 affects several vital organs, including the brain, and can cause neurological manifestations. Objective: To characterize the neurological manifestations of hospitalized patients with laboratory confirmation of COVID-19, between May and August, 2020. Design and setting: Observational study at Veredas Hospital and University Hospital Professor Alberto Antunes in Alagoas, Brazil. Methods: Socio-demographic data, infectious and neurological symptoms, risk factors for neurological and infectious diseases, clinical history, treatment instituted and outcome of patients were collected. Results: We included 30 patients with a mean age of 61.05 ± 18.65 years, 70% were female. The average between the onset of COVID-19 symptoms and hospital admission was 10 ± 9.7 days. Systemic arterial hypertension (66.7%) and diabetes mellitus (63.3%) were the main comorbidities. Cough, fever (60%) and dyspnea (56.7%) stood out in general symptoms. The most frequent neurological symptom...
Brazilian Journal Of Pain
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery, 2016
Pneumoventricle and liquoric fistula are possible complications of traumatic brain injury (TBI), ... more Pneumoventricle and liquoric fistula are possible complications of traumatic brain injury (TBI), the main cause of morbimortality related to trauma in Brazil. Liquoric fistulae are more common after direct trauma with skull base fractures. However, pneumoventricle is rare and occurs due to excessive cerebrospinal fluid (CSF) drainage in the presence of a poorly compliant ventricle system, resulting in the influx of air to its interior. The pathophysiology of tension pneumoventricle remains uncertain. However, the traumatic cause is certain and multiple bone fractures of the face and liquoric fistula may contribute to the process. If symptomatic, the tension pneumoventricle can cause rapid clinical deterioration. The authors aim to report a rare case of post-TBI tension pneumoventricle with complete resolution and without signs of recurrence of the liquoric fistula after surgical treatment.
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery
ResumoOs cistos epidermoides constituem lesões congênitas, benignas e raras, que correspondem a c... more ResumoOs cistos epidermoides constituem lesões congênitas, benignas e raras, que correspondem a cerca de 0,2% a 1,8% de todos os tumores intracranianos, sendo que em apenas 5% dos casos localizam-se no quarto ventrículo. Apesar de sua gênese na vida intrauterina, são geralmente diagnosticados entre a terceira e quinta década de vida em decorrência de seu padrão de crescimento muito lento. A imagem ponderada pela difusão da ressonância magnética é fundamental para a formulação do diagnóstico. O tratamento ideal consiste no esvaziamento do conteúdo cístico com ressecção completa da cápsula. Neste trabalho, é descrito um caso de uma paciente de 31 anos de idade com síndrome cerebelar, evoluindo com síndrome de hipertensão intracraniana. A sintomatologia era decorrente de hidrocefalia obstrutiva por cisto epidermoide localizado no interior do quarto ventrículo, confirmado pela anatomia patológica.
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery, Aug 24, 2017
Epidermoid cysts constitute congenital, benign and rare lesions, corresponding to $ 0.2% to 1.8% ... more Epidermoid cysts constitute congenital, benign and rare lesions, corresponding to $ 0.2% to 1.8% of all intracranial tumors. Only 5% of the cases are located in the fourth ventricle. Despite their genesis in intrauterine life, they are usually diagnosed between the third and fifth decades of life due to their very slow growth pattern. The image weighted by the diffusion of the magnetic resonance is essential to establish the diagnosis. The ideal treatment consists of emptying the cystic content with complete capsule resection. In the present work, we report the case of a 31-year-old female with cerebellar syndrome that evolved with intracranial hypertension. The symptomatology was due to an obstructive hydrocephalus by an epidermoid cyst located inside the fourth ventricle, which was confirmed by the pathological anatomy.
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery, Nov 17, 2016
Introduction Aneurysmal bone cysts (ABCs) are pseudotumoral bone lesions of unknown etiology that... more Introduction Aneurysmal bone cysts (ABCs) are pseudotumoral bone lesions of unknown etiology that are also hypervascularized, benign, and locally destructive. They are rare in the base of the skull. The present case report describes a case of aneurysmal bone cyst in the sella turcica. Case Report The present study was developed at the department of neurosurgery of the Hospital Universitário Professor Alberto Antunes of the Universidade Federal de Alagoas (HUPAA-AL, in the Portuguese acronym), Maceió, state of Alagoas, Brazil, and is accompanied by a review of the literature from the PubMed database. A 17-year-old female patient with bitemporal hemianopia and intense left hemicranial headache associated with symptoms from the cranial nerves contained in the cavernous sinus. Neuroimaging evidenced a large lesion in the suprasellar region with calcification foci, sellar erosion, and extension to the cavernous sinus. The patient was submitted to a partial lesion resection and the histopathological analysis showed an aneurysmal bone cyst. Conclusion A rare case of intracranial aneurysmal bone cyst, with the important differential diagnosis from pituitary adenoma. Resumo Introdução Cistos ósseos aneurismáticos (COAs) são lesões ósseas pseudotumorais, de etiologia desconhecida, hipervascularizadas, benignas, localmente destrutivas. Cistos ósseos aneuristmáticos são raros na topografia da base do crânio. O objetivo do presente relato de caso é descrever um caso de cisto ósseo aneurismático localizado na sela túrcica. Relato de caso O caso foi acompanhado no Serviço de Neurocirurgia do Hospital Universitário Professor Alberto Antunes da Universidade Federal de Alagoas (HUPAA-AL), Maceió, AL, Brasil, e sua descrição foi feita conforme dados encontrados em revisão de literatura realizada por meio do banco de dados PubMed. Paciente do sexo feminino, 17 anos, com hemianopsia bitemporal e intensa cefaleia hemicraniana esquerda