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[CT and MRT in progressive multifocal leukoencephalopathy (PML)]

H Lanfermann1, W Heindel, R Schröder

  • 1Institut und Poliklinik für Radiologische Diagnostik, Universität zu Köln.

Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|July 1, 1994
PubMed
Summary

Magnetic Resonance Imaging (MRI) is superior to Computed Tomography (CT) for detecting lesions in progressive multifocal leukoencephalopathy (PML). MRI provides a more accurate assessment of lesion extent, crucial for understanding PML progression and symptoms.

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Area of Science:

  • Neurology
  • Radiology
  • Infectious Diseases

Background:

  • Progressive multifocal leukoencephalopathy (PML) is a rare, often fatal, demyelinating disease.
  • PML primarily affects immunocompromised individuals, particularly those with HIV/AIDS or hematologic malignancies.

Purpose of the Study:

  • To retrospectively analyze radiological findings of PML in patients.
  • To correlate radiological findings with clinical symptoms.
  • To compare the diagnostic efficacy of CT and MRI in PML.

Main Methods:

  • Retrospective analysis of 21 CT and 16 MRI studies from 14 patients with PML.
  • Comparison of CT and MRI findings, particularly in 9 patients with studies obtained within two weeks.
  • Evaluation of lesion detection, extent, and characteristics, including contrast enhancement.

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Main Results:

  • MRI demonstrated superior lesion detection and accurate assessment of extent compared to CT.
  • CT missed smaller lesions (<1 cm) and underestimated the size of others.
  • No significant cortical involvement, mass effect, or atrophy was observed; minimal contrast enhancement was noted in one lesion.
  • Three distinct radiological patterns of PML correlated with specific neurological symptoms were identified.

Conclusions:

  • MRI is the preferred imaging modality for diagnosing and monitoring PML due to its higher sensitivity and accuracy.
  • Distinct radiological patterns of PML can be correlated with clinical presentations, aiding in diagnosis and prognosis.
  • Further research into PML imaging characteristics may improve patient management.