the Covid-19 pandemic began, a potentially serious respiratory infection whose etiology is a coronavirus. SARS-COV-2 draws attention due to its ability to generate diverse multisystemic clinical manifestations. Stroke is the second leading cause of death in the world, however, even with evidence of an increase in the incidence of cases, there has been a lower demand for emergency care units for this reason since the beginning of the Covid-19 pandemic. The pathophysiology of Covid-19 includes thromboembolic mechanisms that may possibly be related to the etiology of the stroke. Objective and case report: This study aims to report the case of a 55-yearold male patient without comorbidities who presented with malignant ischemia of the middle cerebral artery after hospitalization for Covid-19. The methodology of the work consists of a case report based on a retroactive analysis of medical records, as well as a review of the literature on the subject. Conclusion: There are described cases of stroke during Covid-19 and there is a similarity between the pathophysiological mechanisms of the two diseases, but the medical literature still lacks studies that prove or contest this relationship.

some other cases described of pseudotumor cerebri after Covid-19, pointing to the need to publish new studies on the subject so that eventually the presence of a causal relationship between the two pathologies can be proven or refuted.

Introduction: At the end of 2019, the Covid-19 pandemic began, a severe acute respiratory infection caused by the coronavirus. Encephalitis is defined by inflammation of the brain parenchyma with neurological dysfunction that can be caused by infection or autoimmunity, it should be suspected when there are symptoms or signs of neurological dysfunction that present acutely. There are already studies in the medical literature that seek to correlate the covid-19 infection with the onset of encephalitis, which could indicate a possible causal relationship between the two conditions. Objective and case report: This study aims to report the case of a 42-year-old male patient who was diagnosed with encephalitis one week after the onset of COVID-19. The case report was carried out based on a review of medical records and correlation with the literature. Conclusion: There are other cases of encephalitis described after or concomitantly with the Covid-19 infection, thus pointing to the need to publish new studies on the subject so that eventually the presence of a causal relationship between the two pathologies can be proven or refuted.

Primitive neuroectodermal tumors (PNETs) are high-grade mesenchymal malignancies that usually occur in children and adolescents. Although PNET is the second most common malignant neoplasm in childhood, the spinal cord as the primary site is extremely rare in all age groups.

A artéria de Uchimura é um tipo de variação anatômica da irrigação do hipocampo, uma região cerebral complexa, responsável pela memória, aprendizado e emoções. A vascularização do hipocampo é feita através da artéria coroideia anterior, coroideia posterior lateral, temporal inferior e artéria cerebral posterior que se ramificam nas artérias hipocampais. A artéria de Uchimura está presente em uma variação anatômica na qual a artéria cerebral posterior dá origem às artérias hipocampais, sendo descrita por Yushi Uchimura em 1928. Foram encontrados 6 trabalhos de comparação anatômica mostrando de quatro a cinco padrões de irrigação do hipocampo com variação significativa. A denominação “artéria de Uchimura” foi diretamente descrita por apenas dois trabalhos. Dessa forma, a irrigação do hipocampo é variável e não há concordância na definição das artérias hipocampais, o que pode levar a diferentes resultados apesar da mesma vascularização. Esse trabalho tem como objetivo fazer uma revisão da literatura sobre a anatomia da artéria de Uchimura, assim como suas correlações clínicas e sua importância em doenças com acometimento hipocampal.