Recurrent ataxia and dysarthria in myelin oligodendrocyte glycoprotein antibody-associated disorder

The spectrum of central nervous system demyelinating disorders is vast and heterogeneous and, often, with overlapping clinical presentations. Misdiagnosis might occur in some cases with serious therapeutic repercussions. However, introduction of several new biomarkers such as aquaporin-4 IgG and myelin oligodendrocyte glycoprotein IgG has made distinction between diseases such as multiple sclerosis and myelin oligodendrocyte glycoprotein antibody-associated disorder easier. Here, we report a case of a 15-year-old male patient with subacute multifocal neurological presentation without encephalopathy, eventually diagnosed as myelin oligodendrocyte glycoprotein antibody-associated disorder.

Neurological Manifestations of Covid-19 Hospitalized Patients In the state of Punjab, India

Introduction: COVID 19 often presents with flu-like symptoms. Elderly patients with systemic comorbidities are more likely to have severe COVID 19 infections and deaths. Severe neurological complications are frequently reported in severely and critically ill patients. In COVID-19, both central and peripheral nervous systems can be affected. The study aims to overview the spectrum, characteristics, and outcomes of neurologic manifestations associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Methods: A total of 1000 confirmed CoVID-19 patients were enrolled for the study. Demographic features and initial clinical manifestations were noted, and patients were followed during the hospital stay to develop any new neurological signs and symptoms. For analytical purposes, neurological presentations were grouped into the central nervous system, peripheral nervous system, and musculoskeletal system manifestations. Appropriate laboratory testing was employed as required on a case-to-case basis. Results: The mean age was 44.6 ± 14.3 years. 625 (62.5%) patients were male, while 375 (37.5%) were female. The neurological illness was a primary manifestation in 119 (11.9%) cases. These included encephalopathy (n=78), ischemic stroke (n=28), Guillain- Barre syndrome, (n=3), facial nerve palsy (n=4), and encephalitis (n=6). The most common neurological symptoms were headache 313 (31.3%) and hyposmia 52 (5.2%), followed by encephalopathy 78 (7.8%). More serious complications like seizures 18 (1.8%) and stroke 28 (2.8%) were also seen. Conclusion: CoVID-19 can present with a neurological illness, and we should remain vigilant to the possibility of neurological presentation of COVID-19 that can be thrombo-embolic, inflammatory, or immune-mediated. Bangladesh Journal of Medical Science Vol.20(5) 2021 p.155-161

Neurological Presentations of COVID-19: Characteristic Features in a Case Series of Hospitalized Patients from Abu Dhabi, UAE

Background. COVID-19 patients can present with neurological manifestations in the form of headache, dizziness, hyposmia, myalgia, peripheral neuropathy, acute cerebrovascular disease, and encephalopathy. Neurological involvement could be due to virus-induced brain hypoxia, brain infection, or immune reaction. We aim to describe the neurological presentation of COVID-19 patients and study their neuroimaging findings and disease outcome. Method. The study is a single-centre, retrospective, observational study in Sheikh Shakhbout Medical City (SSMC), Abu Dhabi, UAE. Patients diagnosed with COVID-19 between March and May 2020 who presented with neuropathological features with or without respiratory manifestations of COVID-19 were enrolled. Electronic records were studied for age, sex, duration of hospitalization, detailed neurological presentation, history or documented concomitant fever and respiratory features of COVID-19, inflammatory markers, neuroimaging, progress, and disease outcome. Results. Thirty-three patients of 10 nationalities presented with neurological manifestations. Mean (range) age was 51.4 (21–86) years. Twenty-four had comorbidities, and 18 had no prior or concomitant respiratory symptoms. Ten patients presented with encephalopathy and exhibited altered behavior/sensorium: 7 presented with myositis, 8 with stroke, and 4 with seizures, and 4 had peripheral and cranial nerve involvement. The mean (average) duration of hospital stay was 11.4 days (1-38) with the longest observed in stroke patients. Fifteen patients (45%) died and 3 (9%) had residual weakness. Serum ferritin, CRP, and procalcitonin were higher in the severe disease group and correlated with risk of death. Twelve of 22 brain images showed abnormalities including haemorrhage, infarcts, small vessel ischemia, and oedema. Risk of death was higher in older age but did not differ based on the underlying neuropathology. Conclusion. COVID-19 patients who present with neurological involvement have a higher risk of mortality which is aggravated by older age and higher inflammatory markers. The type of neurological pathology does not seem to influence the risk of mortality.

Primary histiocytic sarcoma in the brain with renal metastasis causing internal ophthalmoparesis and external ophthalmoplegia in a Maine Coon cat

Case summary An 11-year-old neutered male Maine Coon cat was presented for investigation of anisocoria and depression. Neurological examination was consistent with a lesion at the level of the middle cranial fossa, and biochemistry was indicative of moderate renal functional impairment. MRI of the brain identified an extra-axial mass lesion at the level of the middle cranial fossa, T2-weighted hyperintense and strongly homogeneously contrast enhancing with dural tail. The cat was euthanased after 6 weeks of palliative treatment with corticosteroids. Histopathology and immunohistochemistry of the brain, the intra-cranial mass and the renal masses found on necropsy were consistent with histiocytic sarcoma. Relevance and novel information Central nervous system histiocytic sarcoma is a rare finding in cats. This original case report describes the neurological presentation, novel MRI characteristics and pathological findings of suspected primary histiocytic sarcoma affecting the brain with renal metastasis in a cat.