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Putaminal involvement in Rasmussen encephalitis.

Bhagavatheeswaran Rajesh1, Chandrasekharan Kesavadas, Radhakrishnan Ashalatha

  • 1Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India.

Pediatric Radiology
|May 20, 2006
PubMed
Summary
This summary is machine-generated.

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Rasmussen encephalitis (RE) frequently involves the putamen, a basal ganglion structure, more than previously recognized. Identifying putaminal changes aids in radiological diagnosis of this rare childhood neurological disease.

Area of Science:

  • Neurology
  • Pediatric Neurology
  • Neuroradiology

Background:

  • Rasmussen encephalitis (RE) is a rare, severe childhood neurological disorder.
  • It causes progressive neurological deficits and intractable seizures, typically affecting one brain hemisphere.
  • MRI in RE shows unihemispheric atrophy, grey/white matter changes, and basal ganglion involvement, especially the caudate nucleus.

Purpose of the Study:

  • To analyze brain structure involvement in Rasmussen encephalitis patients.
  • To correlate imaging findings with clinical presentation.
  • To investigate the pattern of basal ganglion involvement in RE.

Main Methods:

  • Retrospective review of medical records and neuroimaging.
  • Inclusion of 12 patients diagnosed with RE based on European Consensus criteria.

Related Experiment Videos

  • Analysis of MRI features and clinical data.

    • Main Results:

    • All patients presented with refractory seizures; epilepsia partialis continua was common.
    • Hemiparesis was observed in most patients.
    • Neuroimaging revealed frequent insular/periinsular cortical involvement (11/12), caudate atrophy (10/12), and significant putaminal atrophy (9/12), with signal changes in 6/9.

    Conclusions:

    • Rasmussen encephalitis frequently involves the putamen, indicating more extensive basal ganglion pathology than previously understood.
    • Putaminal atrophy and signal changes are important findings in RE.
    • Recognizing these putaminal changes can improve radiological diagnosis of Rasmussen encephalitis.