Congenital malformations of the posterior fossa: a review of clinical and radiological features through an Illustrated guide / Malformações congênitas da fossa posterior: uma revisão das características clínicas e radiológicas por meio de um guia ilustrado

Congenital malformations of the posterior fossa (PF) encompass a wide spectrum of morphological anomalies that arise during embryonic development. This paper provides a narrative review of these most common disorders from a morphological approach based on the division into cystic (Dandy-Walker malformation, Blake's Pouch cyst, mega cisterna magna, arachnoid cyst, and cerebellar vermis hypoplasia) and non-cystic malformations (Joubert syndrome, rhomboencephalosynapsis, and pontocerebellar hypoplasia). The embryogenesis of PF structures is briefly outlined. While magnetic resonance imaging is the preferred modality for evaluation, computerized tomography and ultrasonography serve complementary roles. In conjunction with clinical aspects, specific radiological features, such as cerebellar vermis morphology, Torcular Herophili position, and the presence/absence of mass effect, are highlighted for accurate diagnosis. We also present some typical radiological findings in non-cystic malformations, such as molar tooth sign, diamondshaped fourth ventricle, and dragonfly-shaped cerebellum. This comprehensive review aims to assist radiologists, neuropediatricians, and general neurologists in recognizing and describing PF malformations, thereby facilitating appropriate management strategies.

As malformações congênitas da fossa posterior (FP) abrangem um amplo espectro de anomalias morfológicas que surgem durante o desenvolvimento embrionário. Este artigo fornece uma revisão narrativa desses distúrbios mais comuns a partir de uma abordagem morfológica baseada na divisão em malformações císticas (malformação de Dandy-Walker, cisto da bolsa de Blake, mega cisterna magna, cisto aracnoide e hipoplasia do vermis cerebelar) e não císticas (syndrome de Joubert, rombencefalossinapse e hipoplasia pontocerebelar). A embriogênese das estruturas da FP é brevemente descrita. Embora a ressonância magnética seja a modalidade preferida para avaliação, a tomografia computadorizada e a ultrassonografia desempenham funções complementares. Em conjunto com os aspectos clínicos, características radiológicas específicas, como a morfologia do vermis cerebelar, a posição da torcula Herophili e a presença/ausência de efeito de massa, são destacadas para um diagnóstico preciso. Apresentamos também alguns achados radiológicos típicos de malformações não císticas, como sinal do dente molar, quarto ventrículo em forma de diamante e cerebelo em forma de libélula. Esta revisão abrangente visa auxiliar radiologistas, neuropediatras e neurologistas gerais no reconhecimento e na descrição das malformações da FP, facilitando, assim, estratégias de manejo adequadas.

Sleeping and dreaming in Greek mythology.

This article aims to emphasize the major influence of Ancient Greek Mythology on modern sleep medicine. An analysis of Greek texts and medical literature using the MeSH terms Greek mythology, sleep, Greek Gods, and myths was conducted to identify mythological references related to sleep medicine. The findings are discussed concerning etymology, the early conceptualization of some disorders, and the developing characterization of sleep disorders in Greek mythology. The search found several observations in clinical sleep medicine concealed in ancient myths. Beyond the etymology of terms and reflective imaginations, these myths and their characters influence concepts that still tantalize our medical practice in modern days.

[The dynamics of financialized capitalism and the Brazilian health system: reflections in the shadows of the COVID-19 pandemic]. / Dinâmica do capitalismo financeirizado e o sistema de saúde no Brasil: reflexões sob as sombras da pandemia de COVID-19.

The COVID-19 pandemic in Brazil has highlighted the importance of the Brazilian Unified National Health System (SUS) and the limitations of the country's prevailing health system, consisting of the public and private sectors, in the context of financialized capitalism in which typical instabilities and crises are structurally determined. The article discusses the Brazilian health system under the aegis of financialized capitalism and during the COVID-19 pandemic. The article contends that financialization as a systemic pattern of wealth increases the process of commodification of socioeconomic relations which is inherent to this system, making the State's provision of health services indispensable.

A pandemia de COVID-19 no Brasil explicitou a importância do Sistema Único de Saúde (SUS) e as limitações do sistema de saúde vigente no país, composto pelos setores público e privado, no contexto do capitalismo financeirizado em que instabilidades e crises típicas são estruturalmente determinadas. Nesse sentido, o artigo discute o sistema de saúde no Brasil sob a égide do capitalismo financeirizado e à luz da pandemia de COVID-19. Sustenta-se que a financeirização enquanto padrão sistêmico de riqueza potencializa processo de coisificação das relações socioeconômicas que é imanente a esse sistema, tornando indispensável o provimento dos serviços de saúde pelo Estado.

La pandemia de COVID-19 en Brasil explicitó la importancia del Sistema Único de Salud (SUS) y las limitaciones del sistema de salud vigente en el país, compuesto por los sectores público y privado, en el contexto del capitalismo financiarizado, donde las inestabilidades y crisis típicas están determinadas estructuralmente. En ese sentido, el artículo discute el sistema de salud en Brasil bajo la égida del capitalismo financiarizado y a la luz de la pandemia de COVID-19. Se sostiene que la financiarización, como patrón sistémico de riqueza, potencia el proceso de cosificación de las relaciones socioeconómicas que es inmanente a este sistema, convirtiendo en indispensable la provisión de los servicios de salud por parte del Estado.

COVID-19 and Central Nervous System Hypersomnias.

Purpose of review: Central nervous system (CNS) hypersomnias can be triggered by external factors, such as infection or as a response to vaccination. The 2019 coronavirus disease (COVID-19) pandemic, which was caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), led to a worldwide effort to quickly develop a vaccine to contain the pandemic and reduce morbidity and mortality. This narrative review is focused on the literature published in the past 2 years and provides an update on current knowledge in respect of the triggering of CNS hypersomnias by infection per se, vaccination, and circadian rhythm alterations caused by social isolation, lockdown, and quarantine. Recent findings: At present, there is no consensus on the association between hypersomnias and COVID-19 vaccination or infection per se; however, the data suggest that there has been an increase in excessive daytime sleepiness due to vaccination, but only for a short duration. Kleine Levin syndrome, hypersomnia, excessive daytime sleepiness, and narcolepsy were aggravated and exacerbated in some case reports in the literature. Both increased and decreased sleep duration and improved and worsened sleep quality were described. In all age groups, delayed sleep time was frequent in studies of patients with hypersomnolence. Summary: The hypothesis that there is a pathophysiological mechanism by which the virus, vaccination, and the effects of quarantine aggravate hypersomnias is discussed in this review.

Aspectos anatômicos, fisiopatológicos e clínicos da Síndrome de Horner: um guia ilustrado / Anatomical, pathophysiological and clinical aspects of Horner Syndrome: illustrated guide

A Síndrome de Horner (SH) é classicamente caracterizada por uma tríade clínica: miose/anisocoria, ptose e anidrose facial. Sua fisiopatologia está relacionada à interrupção da via oculossímpatica, no entanto os mecanismos que levam a instalação da síndrome são diversos, e alguns até potencialmente fatais, evidenciando a importância de sua identificação precoce. Elucidamos ao longo deste artigo os principais aspectos anatômicos, etiopatogênicos e clínicos desta condição neurológica

Horner Syndrome (HS) is classically characterized by a triad of symptoms: miosis/anisocoria, ptosis and facial anhidrosis. It's pathophysiology is related to the interruption of the oculosympathetic pathway, but the mechanisms that lead to the onset of the syndrome are diverse, and some are even potentially lethal, highlighting the importance of it's early diagnosis. This article elucidates main anatomical, etiopathogenic and clinical aspects of this neurological disorder.

Sleep disorders in Down syndrome: a systematic review / Distúrbios do sono na síndrome de Down: revisão sistemática

ABSTRACT Background: Sleep disorders are commonly observed in children with Down syndrome (DS) and can lead to significant behavioral and cognitive morbidities in these individuals. Objective: To perform a systematic review evaluating sleep disorders in individuals with DS. Methods: Search strategies were based on combinations of keywords: "Down syndrome"; "trisomy 21"; "sleep disorders"; "dyssomnias"; "sleep apnea"; "obstructive"; "sleeplessness"; "insomnia"; "parasomnias"; and "excessive daytime sleepiness". PubMed and Science Direct were used. Only original studies and retrospective reviews in English published between January 2011 and March 2021 were included. Results: 52 articles were included, most of them involving children and adolescents under 18 years of age. The main sleep disorder associated with DS was obstructive sleep apnea (OSA). Some studies reported the presence of cognitive dysfunction in patients with DS and sleep-disordered breathing, and few have been found about parasomnia, insomnia, and daytime sleepiness in these patients. Movement disorders and unusual postures during sleep may be related to disordered sleep breathing in DS. The main treatment options for OSA are continuous positive airway pressure therapy (CPAP), surgery, and weight control. Computational modeling associated with MRI has been used to plan surgical interventions in these patients. Conclusions: Individuals with DS are at high risk of developing sleep-related breathing disorders. The main sleep disorder associated with DS was OSA. The presence of sleep-disordered breathing contributes to a worsening of cognitive function in patients with DS.

RESUMO Antecedentes: Os distúrbios do sono são comumente observados em crianças com síndrome de Down (SD) e podem levar a morbidades comportamentais e cognitivas significativas nesses indivíduos. Objetivo: Realizar uma revisão sistemática para avaliar os distúrbios do sono em indivíduos com SD. Métodos: As estratégias de busca foram baseadas em combinações de palavras-chave: "Síndrome de Down"; "trissomia 21"; "distúrbios do sono"; "dissonias"; "apneia do sono"; "obstrutivo"; "insônia"; "insônia"; "parassonias" e "sonolência diurna excessiva". PubMed e Science Direct foram usados. Apenas estudos originais e revisão retrospectiva de prontuários escritos em inglês e publicados de janeiro de 2011 a março de 2021 foram incluídos. Resultados: Foram selecionados 52 artigos, a maioria com crianças e adolescentes menores de 18 anos. O principal distúrbio do sono associado à SD foi a apneia obstrutiva do sono (AOS). Alguns estudos relatam a presença de disfunção cognitiva em pacientes com SD e distúrbios respiratórios do sono, e poucos foram encontrados sobre parassonia, insônia e sonolência diurna nesses pacientes. Distúrbios do movimento e posturas incomuns durante o sono podem estar relacionados ao distúrbio respiratório do sono na SD. As principais opções de tratamento para AOS são pressão positiva contínua nas vias aéreas (CPAP), abordagem cirúrgica e controle de peso. A modelagem computacional associada à ressonância magnética tem sido usada para planejar intervenções cirúrgicas nesses pacientes. Conclusões: Indivíduos com SD apresentam alto risco de desenvolver distúrbios respiratórios relacionados ao sono. O principal distúrbio do sono associado à SD foi a AOS. A presença de distúrbios respiratórios do sono contribui para a piora das funções cognitivas em pacientes com SD.

The association between sleep disturbances and tooth loss among post-stroke patients.

BACKGROUND: Loss of teeth has been associated with neurological and sleep disorders. It is considered to be a predictor of stroke and leads to modifications of airway patency and predisposition to obstructive sleep apnea. OBJECTIVE: To investigate sleep quality, risk of obstructive sleep apnea and excessive sleepiness among post-stroke patients with tooth loss attending the Neurovascular Clinic of the Federal University of São Paulo. METHODS: The prevalence rates of different types of stroke were assessed among 130 patients with different degrees of tooth loss, along with the presence of sleep disturbances, risk of obstructive sleep apnea and excessive daytime sleepiness. RESULTS: The prevalence of ischemic stroke was 94.6%, with either no significant disability or slight disability. Our sample had poor sleep quality, and a high risk of obstructive sleep apnea, but without excessive daytime sleepiness. Half of our sample had lost between 9 and 31 teeth, and more than 25% had edentulism. The majority used full removable dental prostheses, and more than half of these individuals slept without removing the prosthesis. CONCLUSIONS: We found high prevalence of poor sleep quality and high risk of obstructive sleep apnea among post-stroke patients with tooth loss. This indicates the need for further studies on treating and preventing sleep disturbances in stroke patients with tooth loss.

Sleep disorders in Down syndrome: a systematic review.

BACKGROUND: Sleep disorders are commonly observed in children with Down syndrome (DS) and can lead to significant behavioral and cognitive morbidities in these individuals. OBJECTIVE: To perform a systematic review evaluating sleep disorders in individuals with DS. METHODS: Search strategies were based on combinations of keywords: "Down syndrome"; "trisomy 21"; "sleep disorders"; "dyssomnias"; "sleep apnea"; "obstructive"; "sleeplessness"; "insomnia"; "parasomnias"; and "excessive daytime sleepiness". PubMed and Science Direct were used. Only original studies and retrospective reviews in English published between January 2011 and March 2021 were included. RESULTS: 52 articles were included, most of them involving children and adolescents under 18 years of age. The main sleep disorder associated with DS was obstructive sleep apnea (OSA). Some studies reported the presence of cognitive dysfunction in patients with DS and sleep-disordered breathing, and few have been found about parasomnia, insomnia, and daytime sleepiness in these patients. Movement disorders and unusual postures during sleep may be related to disordered sleep breathing in DS. The main treatment options for OSA are continuous positive airway pressure therapy (CPAP), surgery, and weight control. Computational modeling associated with MRI has been used to plan surgical interventions in these patients. CONCLUSIONS: Individuals with DS are at high risk of developing sleep-related breathing disorders. The main sleep disorder associated with DS was OSA. The presence of sleep-disordered breathing contributes to a worsening of cognitive function in patients with DS.

The association between sleep disturbances and tooth loss among post-stroke patients / Prevalência de edentulismo e distúrbios de sono após acidente vascular cerebral

ABSTRACT Background: Loss of teeth has been associated with neurological and sleep disorders. It is considered to be a predictor of stroke and leads to modifications of airway patency and predisposition to obstructive sleep apnea. Objective: To investigate sleep quality, risk of obstructive sleep apnea and excessive sleepiness among post-stroke patients with tooth loss attending the Neurovascular Clinic of the Federal University of São Paulo. Methods: The prevalence rates of different types of stroke were assessed among 130 patients with different degrees of tooth loss, along with the presence of sleep disturbances, risk of obstructive sleep apnea and excessive daytime sleepiness. Results: The prevalence of ischemic stroke was 94.6%, with either no significant disability or slight disability. Our sample had poor sleep quality, and a high risk of obstructive sleep apnea, but without excessive daytime sleepiness. Half of our sample had lost between 9 and 31 teeth, and more than 25% had edentulism. The majority used full removable dental prostheses, and more than half of these individuals slept without removing the prosthesis. Conclusions: We found high prevalence of poor sleep quality and high risk of obstructive sleep apnea among post-stroke patients with tooth loss. This indicates the need for further studies on treating and preventing sleep disturbances in stroke patients with tooth loss.

RESUMO Antecedentes: A perda de dentes tem sido associada a distúrbios neurológicos e do sono. É considerada um preditor de acidente vascular cerebral (AVC), com modificações na permeabilidade das vias aéreas e predisposição à apneia obstrutiva do sono. Objetivo: Investigar a qualidade do sono, o risco de apneia obstrutiva do sono e a sonolência excessiva em pacientes pós-AVC com perda dentária, atendidos na Clínica Neurovascular da Universidade Federal de São Paulo. Métodos: O estudo avaliou a prevalência de diferentes tipos de AVC em 130 pacientes com diferentes graus de perda dentária e a presença de distúrbios do sono, risco de apneia obstrutiva do sono e sonolência excessiva. Resultados: A prevalência de AVC isquêmico foi de 94,6%, sem deficiência significativa ou deficiência leve. Nossa amostra tinha má qualidade de sono e alto risco de apneia obstrutiva do sono, sem sonolência diurna excessiva. Metade de nossa amostra perdeu entre nove e 31 dentes, e mais de 25% tiveram edentulismo. A maioria usava próteses dentárias totalmente removíveis e, desses pacientes, mais da metade dormia com elas. Conclusões: Encontramos alta prevalência de má qualidade do sono e alto risco de apneia obstrutiva do sono em pacientes pós-AVC com perda dentária. Isso indica a necessidade de mais estudos sobre o tratamento e a prevenção de distúrbios do sono em pacientes com AVC e perda dentária.

Dinâmica do capitalismo financeirizado e o sistema de saúde no Brasil: reflexões sob as sombras da pandemia de COVID-19 / The dynamics of financialized capitalism and the Brazilian health system: reflections in the shadows of the COVID-19 pandemic / Dinámica del capitalismo financiarizado y el sistema de salud en Brasil: reflexiones bajo las sombras de la pandemia de COVID-19

A pandemia de COVID-19 no Brasil explicitou a importância do Sistema Único de Saúde (SUS) e as limitações do sistema de saúde vigente no país, composto pelos setores público e privado, no contexto do capitalismo financeirizado em que instabilidades e crises típicas são estruturalmente determinadas. Nesse sentido, o artigo discute o sistema de saúde no Brasil sob a égide do capitalismo financeirizado e à luz da pandemia de COVID-19. Sustenta-se que a financeirização enquanto padrão sistêmico de riqueza potencializa processo de coisificação das relações socioeconômicas que é imanente a esse sistema, tornando indispensável o provimento dos serviços de saúde pelo Estado.

The COVID-19 pandemic in Brazil has highlighted the importance of the Brazilian Unified National Health System (SUS) and the limitations of the country's prevailing health system, consisting of the public and private sectors, in the context of financialized capitalism in which typical instabilities and crises are structurally determined. The article discusses the Brazilian health system under the aegis of financialized capitalism and during the COVID-19 pandemic. The article contends that financialization as a systemic pattern of wealth increases the process of commodification of socioeconomic relations which is inherent to this system, making the State's provision of health services indispensable.

La pandemia de COVID-19 en Brasil explicitó la importancia del Sistema Único de Salud (SUS) y las limitaciones del sistema de salud vigente en el país, compuesto por los sectores público y privado, en el contexto del capitalismo financiarizado, donde las inestabilidades y crisis típicas están determinadas estructuralmente. En ese sentido, el artículo discute el sistema de salud en Brasil bajo la égida del capitalismo financiarizado y a la luz de la pandemia de COVID-19. Se sostiene que la financiarización, como patrón sistémico de riqueza, potencia el proceso de cosificación de las relaciones socioeconómicas que es inmanente a este sistema, convirtiendo en indispensable la provisión de los servicios de salud por parte del Estado.

Different etiologies of superficial siderosis / Diferentes etiologias de siderose superficial

Superficial Siderosis (SS) is an uncommon condition caused by hemosiderin deposition into the subarachnoid space. SS is characterized by cerebellar ataxia, progressive sensorineural hearing loss and pyramidal signs, but is often an unrecognized disorder. Magnetic Resonance Imaging (MRI) is the diagnostic procedure of choice due its high sensitivity to hemosiderin deposits in addition to being a non-invasive exam. This paper aims to describe a case of SS and to perform a literature review about SS etiologies, neuroimaging features and clinical characteristics. A 65-year-old man came to a neurology outpatient clinic with seizures and cerebellar ataxia with a history of car accident and severe traumatic brain injury 45 years ago. MRI SWAN showed a hyposignal in the cisterns of the base and on the cerebellar surface and T1-weighted images left hippocampal sclerosis.

A Siderose Superficial (SS) é uma condição rara causada por depósitos de hemossiderina no espaço subaracnóideo. SS é caracterizada por ataxia cerebelar, perda neurosensorial auditiva progressiva e sinais piramidais, mas é frequentemente uma desordem de difícil diagnóstico. A Ressonância Magnética (RM) é o exame de escolha para o diagnóstico devido a sua alta sensibilidade aos depósitos de hemossiderina, além de ser um exame não invasivo. Este artigo tem como objetivo descrever um caso de SS e realizar uma revisão da literatura sobre as etiologias da SS, suas características na neuroimagem e suas características clínicas. Um homem de 65 anos de idade procurou o ambulatório de neurologia com convulsões e ataxia cerebelar. Ele informou histórico de acidente automobilístico e lesão cerebral traumática grave há 45 anos. A RNM SWAN mostrou hipossinal nas cisternas da base e na superfície cerebelar e as imagens em T1 evidenciaram a presença de esclerose hipocampal esquerda.

Clinical and radiological features of main dementias / Aspectos clínicos e radiológicos das principais demências

Dementia is a syndrome characterized by a decline of two or more cognitive functions, affecting social or professional life. Alzheimer's Disease is a neurodegenerative disorder that represents 53% of dementia cases; memory loss, inability to recognize faces, impaired judgement, disorientation and confusion are possible common symptoms. Vascular Dementia is responsible for 42% of dementia cases, due to cerebrovascular pathologies, and the clinical aspects are related to the extension and location of the brain injury. Lewy Bodies Dementia is a neurodegenerative disorder that represents 15% of dementia cases, and its symptoms include visual hallucinations, parkinsonism and fluctuating cognitive decline. Frontotemporal dementia is a group of clinical syndromes, divided in Behavioral-variant, characterized by disinhibition, compulsions, apathy, aberrant sexual behavior and executive dysfunction; and Primary Progressive Aphasia, which is subdivided in Nonfluentvariant and Semantic-variant. Vitamin B12 deficiency is a reversible cause of dementia, with a wide clinical feature, that includes psychiatric symptoms such as depression and irritability, hematological symptoms related to anemia (e.g. dyspnea and fatigue), and neurological symptoms including dementia and neuropathy. Normal pressure hydrocephalus is also reversible, presenting forgetfulness, changes in mood, decline of executive functions, reduced attention, and a lack of interest in daily activities as symptoms. The radiological findings vary depending on the etiology of dementia. For that reason, understanding neuroimaging and clinical aspects is important to diagnose effectively.

A demência é uma síndrome que consiste em um declínio de um ou mais domínios cognitivos, que afeta o desempenho social ou profissional do indivíduo. A Doença de Alzheimer é um transtorno neurocognitivo que representa 53% dos casos de demência; seus sintomas podem incluir perda de memória, incapacidade de reconhecer rostos familiares, julgamento comprometido desorientação e confusão mental. A Demência Vascular é responsável por 42% dos casos de demência e é causada por doenças cerebrovasculares, seus achados clínicos são relacionados com o local e com a extensão do dano cerebral. Já a Demência por Corpos de Lewy é uma doença neurocognitiva que representa 15% dos casos de demência, cujos sintomas incluem alucinações visuais, parkinsonismo e flutuação cognitiva. A Demência Frontotemporal, por sua vez, é um grupo de síndromes, que se dividem em variante comportamental ­ caracterizada por desinibição, compulsão, apatia, hipersexualidade e disfunções executivas ­ e Afasia Progressiva Primária, subdividida em variante não-fluente e variante semântica, que cursam com disfunções da linguagem. Há, ainda, a Deficiência de Vitamina B12, uma causa reversível de demência. Ela possui um quadro clínico variado, que inclui sintomas psiquiátricos, como depressão e irritabilidade, sintomas hematológicos relacionados a anemia, como dispneia e fadiga) e sintomas neurológicos, que incluem demência e neuropatias. Uma outra causa reversível é a Hidrocefalia de Pressão Normal, que se apresenta com esquecimentos, alterações de humor, perda de função executiva e redução da atenção e do interesse nas atividades cotidianas. Os achados de neuroimagem variam dependendo da etiologia da demência. Assim, compreender os aspectos clínicos e radiológicos é importante para um diagnóstico efetivo..

Decreased concentration of klotho and increased concentration of FGF23 in the cerebrospinal fluid of patients with narcolepsy.

OBJECTIVE: to explore the status of concentration of klotho and fibroblast growth factor 23 (FGF23) in cerebrospinal fluid (CSF) of patients with narcolepsy. PATIENTS/METHODS: 59 patients with narcolepsy and 17 control individuals were enrolled. We used radioimmunoassay, human klotho enzyme-linked immunosorbent assay (ELISA), human intact FGF23 ELISA and spectrophotometry to measure hypocretin-1, klotho, FGF-23 and phosphorus, respectively. T-Student Test was used to compare klotho and phosphate concentrations, Mann-Whitney U Test were used to compare FGF-23 levels between groups. ANOVA Test was used to compare klotho and phosphate CSF concentrations among narcolepsy patients with CSF hypocretin-1 <110 pg/ml (HCRT-) and narcolepsy patients with CSF hypocretin-1 >110 pg/ml (HCRT+) versus control subjects. RESULTS: Klotho and phosphorus CSF levels were lower in narcoleptic patients than in control (908.18 ± 405.51 versus 1265.78 ± 523.26 pg/ml; p = 0.004 and 1.34 ± 0.25 versus 1.58 ± 0.23 mg/dl; p = 0.001, respectively). We found higher FGF-23 levels in narcoleptic patients (5.51 versus 4.00 pg/mL; p = 0.001). Klotho and phosphorus CSF levels were lower in both HCRT- and HCRT+ than controls. Moreover, there were higher FGF-23 levels in both HCRT-/HCRT+ groups versus controls. However, we did not find differences comparing HCRT- and HCRT+ groups, analyzing CSF klotho, FGF-23 or phosphorus levels. CONCLUSIONS: Patients with narcolepsy have decreased CSF concentration of klotho and increased CSF levels of FGF-23. These findings may play a role in understanding the pathogenesis of narcolepsy.

Anatomical, radiological and clinical features of mesial temporal lobe epilepsy: two illustrated cases reports / Aspectos anatômicos, radiológicos e clínicos da epilepsia do lobo temporal mesial: relato ilustrado de dois casos

Mesial temporal lobe epilepsy is the most commom form of focal epilepsy in adults. Its clinical features include focal seizure, dysmnestic symptoms ­ such as déjà vu or jamais vu ­ and autonomic or psychic aura. We reported two cases of mesial temporal lobe epilepsy with similar clinical features, but with entirely different etiologies. Mesial temporal sclerosis contributes up to 70% of all mesial temporal lobe epilepsy cases and MRI usually shows reduced hippocampal volume and increased signal intensity on T2-weighted imaging. Incomplete hippocampal inversion has uncertain relation with epilepsy and is characterized by an atypical verticalized and medially positioned anatomical pattern of the hippocampus and also a deep collateral sulcus.

A epilepsia do lobo temporal mesial é a forma mais comum de epilepsia focal em adultos. Suas características clínicas incluem crises focais, sintomas dismnésicos - como déjà vu ou jamais vu - e aura autonômica ou psíquica. Relatamos dois casos de pacientes com epilepsia do lobo temporal mesial com manifestações clínicas semelhantes, mas com etiologias completamente diferentes. A esclerose mesial temporal contribui com até 70% de todos os casos de epilepsia do lobo temporal mesial e, geralmente, na ressonância magnética, apresenta atrofia do hipocampo e hipersinal na imagem ponderada em T2. A rotação incompleta do hipocampo possui uma relação incerta com a epilepsia e é caracterizada por alteração da estrutura interna do hipocampo, com um sulco colateral verticalizado e profundo.

Zeus' pain: did he experience a thunderclap headache? / A dor de Zeus: fora ele acometido por uma cefaleia em trovoada?

Zeus is known as the king of the gods and god of the sky. His attributes are lightning and thunder and he is often depicted about to hurl them. According to Greek mythology, Zeus molested the titan Metis and decided to swallow her when she was pregnant, which resulted in an excruciating headache, only relieved after a craniotomy performed using Hephaestus' axe. The result of this procedure was the birth of Athena, Zeus' daughter. We conducted a combined analysis of some writings such as the classical mythological poem Theogony by Hesiod, and some other books that examine and retell myths and legends of ancient Greece, with medical papers on this topic, trying to characterize Zeus' headache. Would it be possible to fit Zeus' headache into the group of thunderclap headaches?

Zeus é conhecido como rei dos deuses e deus dos céus. Tem como atributos os raios e os trovões e é frequentemente representado prestes a lançá-los. De acordo com a mitologia grega, Zeus molestou a titã Métis e resolveu engoli-la grávida, o que resultou em uma cefaleia excruciante, apenas aliviada após uma craniotomia realizada por meio do machado de Hefesto. O fruto deste procedimento foi Atena, filha de Zeus. Realizamos uma análise combinada utilizando escritos mitológicos clássicos como o poema Teogonia de Hesíodo, além de outros livros sobre mitologia e artigos médicos que tratam deste tema, para tentar caracterizar a cefaleia de Zeus. Seria possível enquadrar a cefaleia de Zeus no grupo das cefaleias em trovoada?

Thinking outside the box: cataplexy without narcolepsy.

Cataplexy is a transient loss of muscle tone that can be triggered by emotions such as laughter, excitement or fear. Other causes of cataplexy include Niemann-Pick type C Disease, Angelman Syndrome, Norrie Disease, Prader-Willi Syndrome. In addition, cataplexy can be a side effect of several drugs (eg, lamotrigine, clozapine, and gamma-hydroxybutyrate). Yet, the most prevalent causes of cataplexy without narcolepsy are rare genetic diseases; which explains why cataplexy is classically linked to narcolepsy. Therefore, it is essential disconnecting cataplexy from narcolepsy especially in pediatric population and after use of a few medications. In this review, we described few conditions of cataplexy not related to narcolepsy. We performed a review of literature (MEDLINE and EMBASE database), without limited date or publication restrictions.