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Mineralizing microangiopathy: CT and MRI

D J Shanley1

  • 1Department of Radiology, Tripler Army Medical Center, Honolulu, HI 96859, USA.

Neuroradiology
|May 1, 1995
PubMed
Summary
This summary is machine-generated.

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Mineralizing microangiopathy is a CNS condition often seen after childhood cancer treatment. Imaging shows calcification with specific MRI signal changes.

Area of Science:

  • Neuropathology
  • Pediatric Oncology
  • Neuroradiology

Background:

  • Mineralizing microangiopathy is a histopathologic process affecting the central nervous system (CNS) microvasculature.
  • It is typically observed after combined radiation and chemotherapy for pediatric CNS neoplasms.

Observation:

  • Computed tomography (CT) commonly reveals calcification in the basal ganglia and subcortical white matter.
  • These calcified areas exhibit characteristic signal alterations on magnetic resonance imaging (MRI).

Findings:

  • Calcifications may present paradoxically increased signal intensity on T1-weighted MRI.
  • This is attributed to a surface-relaxation mechanism.
  • Conversely, these areas show decreased signal intensity on T2-weighted images.

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Implications:

  • Understanding these imaging findings is crucial for accurate diagnosis of mineralizing microangiopathy.
  • This aids in differentiating treatment-related changes from other CNS pathologies in pediatric patients.
  • Early recognition can inform prognosis and management strategies for survivors of childhood CNS tumors.