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Unusual small choroid plexus cyst obstructing the foramen of monroe: case report

Majdi M Radaideh1, Norman E Leeds, Ashok J Kumar

  • 1Neuroradiology Section, University of Texas-M. D. Anderson Cancer Center, Houston, 77030, USA.

AJNR. American Journal of Neuroradiology
|May 15, 2002
PubMed

Insights

A choroid plexus cyst in the third ventricle caused obstructive hydrocephalus. Small field-of-view, thin-section MRI effectively diagnosed this rare cause of increased intracranial pressure.

Area of Science:

  • Neurology
  • Radiology
  • Pathology

Background:

  • Choroid plexus cysts are uncommon intraventricular lesions.
  • Obstructive hydrocephalus can result from lesions at the foramen of Monro.
  • Accurate diagnosis of small lesions is crucial for effective management.

Observation:

  • A case report details a choroid plexus cyst located at the right foramen of Monro in the anterior third ventricle.
  • The cyst led to unilateral obstructive hydrocephalus.
  • Small field-of-view (FOV), thin-section Magnetic Resonance (MR) imaging was utilized.

Findings:

  • Small-FOV, thin-section MR imaging proved valuable in diagnosing the small lesion at the foramen of Monro.
  • Immunohistochemical findings of the choroid epithelial cyst were analyzed and compared to other cyst types in the same location.

Implications:

  • This case highlights the diagnostic utility of advanced MR imaging techniques for subtle intraventricular abnormalities.
  • Understanding the immunohistochemical profile of choroid plexus cysts aids in differential diagnosis.
  • Early and accurate diagnosis is key to managing obstructive hydrocephalus and preventing neurological deficits.

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