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Radiologically isolated syndrome: watchful waiting vs. active treatment.

Foziah Alshamrani1, Hind Alnajashi2, M Freedman3

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Radiologically Isolated Syndrome (RIS) involves white matter brain MRI lesions without symptoms. An asymptomatic spinal cord lesion is the strongest predictor of developing multiple sclerosis (MS).

Keywords:
MRIRRMSdemyelinationmultiple sclerosis MSradiologically isolated syndrome RIS

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Area of Science:

  • Neurology
  • Neuroimaging
  • Demyelinating Diseases

Background:

  • Incidental white matter lesions on brain MRI are common.
  • Patients with these lesions may be suspected of having multiple sclerosis (MS).
  • Radiologically Isolated Syndrome (RIS) is diagnosed when MRI findings suggest MS but clinical symptoms are absent.

Purpose of the Study:

  • To provide a timely review of Radiologically Isolated Syndrome (RIS).
  • To focus on treatment considerations for RIS.
  • To discuss predictive factors for conversion from RIS to clinical MS.

Main Methods:

  • Review of existing literature on RIS.
  • Analysis of studies identifying predictive factors for MS conversion.
  • Discussion of current treatment controversies and recommendations.

Main Results:

  • An asymptomatic cervical spinal cord lesion is the strongest identified predictor for conversion of RIS to clinical MS.
  • Treatment of RIS remains controversial.
  • Early treatment in selected patients may improve long-term outcomes.

Conclusions:

  • RIS requires careful consideration due to its potential to progress to MS.
  • Identifying predictive factors is crucial for patient management.
  • Further research is needed to establish optimal treatment strategies for RIS.