John Cunningham virus: Difference between revisions

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* CNS infection with JC virus, usually in the context of HIV infection
 
* CNS infection with JC virus, usually in the context of HIV infection
   
== Epidemiology ==
+
==Background==
  +
===Epidemiology===
 
 
* HIV patients
 
* HIV patients
   
  +
==Clinical Presentation==
== Investigations ==
 
  +
* '''Classic PML'''
  +
** Subacute onset of focal central neurological lesions
  +
** Asymmetric, well-demarcated, nonenchancing subcortical white matter lesions on MRI
  +
* '''PML-IRIS'''
  +
** Focal central neurological lesions following immune recovery
  +
** Contrast enhancing lesions with or without mass effect on MRI
  +
* '''JCV granule cell neuropathy'''
  +
** Chronic cerebellar dysfunction
  +
** Cerebellar atrophy on MRI
  +
* '''JCV encephalitis'''
  +
** Subacute onset of encephalopathy
  +
** Cortical lesions on MRI
  +
* '''JCV meningitis'''
  +
** Chronic headaches
  +
** Ventriculomegaly on MRI
   
 
==Investigations==
 
* MRI head: white matter changes
 
* MRI head: white matter changes
   
== Diagnosis ==
+
==Diagnosis==
 
 
* JC virus PCR
 
* JC virus PCR
   
== Treatment ==
+
==Treatment==
 
 
* Antiretroviral therapy for HIV
 
* Antiretroviral therapy for HIV
   

Revision as of 14:50, 23 May 2020

  • CNS infection with JC virus, usually in the context of HIV infection

Background

Epidemiology

  • HIV patients

Clinical Presentation

  • Classic PML
    • Subacute onset of focal central neurological lesions
    • Asymmetric, well-demarcated, nonenchancing subcortical white matter lesions on MRI
  • PML-IRIS
    • Focal central neurological lesions following immune recovery
    • Contrast enhancing lesions with or without mass effect on MRI
  • JCV granule cell neuropathy
    • Chronic cerebellar dysfunction
    • Cerebellar atrophy on MRI
  • JCV encephalitis
    • Subacute onset of encephalopathy
    • Cortical lesions on MRI
  • JCV meningitis
    • Chronic headaches
    • Ventriculomegaly on MRI

Investigations

  • MRI head: white matter changes

Diagnosis

  • JC virus PCR

Treatment

  • Antiretroviral therapy for HIV