Posterior Reversible Encephalopathy Syndrome (PRES) Associated With COVID-19 Infection—A Case Report and Review

Coronavirus disease 2019 (COVID-19) has caused a large number of systemic complications including a variety of neurological complications. Some of the neurological complications are not known. Posterior reversible encephalopathy syndrome (PRES) is a known acute neurotoxic syndrome causing a wide range of neurological symptoms. If remains untreated, it can potentially become a life-threatening condition. However, it is not a known neurological complication of COVID-19. We describe a presentation of PRES in a patient with positive COVID-19 and presented with altered mental status. A 78-year-old male with history of idiopathic epilepsy was initially admitted with respiratory illness with negative COVID-19 test. Later during his hospitalization, his respiratory condition got worse and his repeat COVID-19 test came back positive. He had continued encephalopathy and was found to have status epilepticus afterward. Magnetic Resonance Imaging brain showed extensive PRES-related changes. His blood pressure remained overall within control without significant fluctuations. No other apparent etiology was identified for PRES except for possible correlation with COVID-19. Clinicians should consider PRES early in their differential diagnoses in patients with severe COVID-19 with continued encephalopathy.

SMART Syndrome: A Case Report

Introduction: Stroke-like migraine attacks after radiation therapy (SMART) syndrome, is a late complication of brain radiotherapy. (1) Symptoms are commonly subacute in onset and involve migraine type of headache, seizures, focal neurologic deficits.(2) . MRI findings are usually unilateral and posterior predominant cortical-subcortical hyperintensity, swelling and prominent gyriform (cortical and leptomeningeal) gadolinum enhancement in the areas of brain that underwent irradiation with or without diffusion restriction.(1) There is no standard treatment protocol of SMART syndrome. Antiepileptics and corticosteroids are commonly used drugs.Case Report: A 65 years old woman diagnosed with breast cancer with brain metastases and treated with more than 50 Gy brain radiotherapy. A couple of months later patient presented with acute right sided weakness and numbness, episodic myoclonic jerking of the right arm and leg and gait instability. MRI and magnetic resonance angiography of the brain with gadolinium revealed left parietooccipital cortical diffusion restriction and accompanying dilatation of the left posterior cerebral artery as new findings. Computed tomography perfusion revealed increased perfussion in the affected area. The patient was diagnosed with SMART syndrome.Management & Outcome: The patient was treated with dexamethasone (16 mg/day) and anticonvulsant therapy. Myoclonic seizures had almost completely remitted. However, her cognitive impairment persisted, then the patient arrested because of aspiration a month later.Discussion: Besides confirming SMART syndrome, diagnostic investigations is also important to exclude other etiologies. Posterior reversible encephalopathy syndrome, post-ictal changes, meningoencephalitis and cerebrovascular diseases are radiological differential diagnosis which should be considered.(3) Proper and early diagnosis of SMART syndrome is significant to refrain unneccessary aggressive approaches and for appropriate treatment to prevent sequela lesions.

Posterior reversible encephalopathy syndrome (PRES) of the brainstem

A 71-year-old man had disordered consciousness whose Glasgow Coma Scale was E4V1M5. His blood pressure was high, but there was no abnormality in the cerebrospinal fluid examination. The MRI finding reveals a high-intensity area at the pons without the blood flow interruption. Thus, he has diagnosed with brainstem PRES

Complete Neurological Recovery In A 3 Year Old Presenting With Posterior Reversible Encephalopathy Syndrome Due To Idiopathic Hypertension – A Case Report

Posterior reversible encephalopathy syndrome is an acute neurological illness presenting with clinical symptoms and distinctive MRI findings. Symptoms include headaches, seizures, altered consciousness as well as visual impairment. PRES is always accompanied by peculiar radiological findings of edematous change affecting the rear cerebral area. It commonly occurs in settings where patients are undergoing hypertensive crisis, or there is the use of steroids, calcineurin inhibitors, in the nephritic state or end-stage renal disease. The management includes treating the underlying cause and symptomatic therapy. However, due to relatively fewer pediatric reports, its management isn’t specific and rather based on experience. Our patient is a 3-year-old male, who presented with hypertensive crisis and MRI findings confirmed it to be a case of PRES. He was managed with a combined regime of antihypertensive and steroids which lead to complete neurological recovery and resolution of PRES. There are a scarce number of case reports on the use of steroids for the treatment of vasogenic oedema in children.