Characteristic MR features of encephalitis caused by Epstein-Barr virus: a case report

J Ono1, K Shimizu, K Harada

  • 1Division of Paediatrics, Toyonaka Municipal Hospital, Osaka, Japan.

Pediatric Radiology
|August 26, 1998
PubMed

Insights

Epstein-Barr virus (EBV) encephalitis can affect the basal ganglia in children. Cranial MRI revealed temporary abnormalities in the striatal body, suggesting EBV as a cause for basal ganglia lesions.

Area of Science:

  • Pediatric Neurology
  • Infectious Diseases
  • Neuroimaging

Background:

  • Epstein-Barr virus (EBV) is a common human herpesvirus.
  • Encephalitis is inflammation of the brain, potentially severe in children.
  • Basal ganglia lesions can result from various neurological conditions.

Observation:

  • An 8-year-old girl presented with encephalitis during acute EBV infection.
  • Cranial MRI showed characteristic signal abnormalities in the putamen and caudate nucleus.
  • These MRI findings indicated lesions localized to the basal ganglia.

Findings:

  • Diagnosis of EBV infection confirmed by serological antibody titres.
  • Acute-phase MRI revealed transient T1-hypointensity and T2-hyperintensity in the striatal body.
  • Complete resolution of MRI abnormalities observed within one month.

Implications:

  • EBV infection should be considered in the differential diagnosis of pediatric encephalitis with basal ganglia involvement.
  • Neuroimaging findings, particularly basal ganglia lesions, can be indicative of EBV etiology.
  • Understanding these specific MRI patterns aids in timely diagnosis and management of EBV-associated neurological complications.

Related Concept Videos

Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Bacterial Meningitis01:24

Bacterial Meningitis

Bacterial meningitis is a severe infectious disease involving inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It occurs when pathogenic bacteria cross the blood–brain barrier and enter the cerebrospinal fluid. Common causative organisms include Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae type b, Listeria monocytogenes, and Escherichia coli K1. The exact route of entry varies by pathogen and host condition.Routes of Entry...
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...