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Pediatric choroid plexus neoplasms: MR, CT, and pathologic correlation
T L Coates1, D B Hinshaw, N Peckman
1Department of Radiation Sciences, Loma Linda University Medical Center, CA 92354.
Radiology
|October 1, 1989
Summary
Choroid plexus papillomas are rare intracranial tumors. Magnetic resonance (MR) imaging and computed tomography (CT) help visualize these highly vascular tumors, aiding surgical planning and follow-up.
Area of Science:
- Neuro-oncology
- Pediatric Radiology
Background:
- Choroid plexus papillomas (CPPs) are rare intracranial neoplasms, accounting for ~0.5% of brain tumors.
- This study reviews five cases (4 papillomas, 1 carcinoma) in infants (4-20 months).
Observation:
- Patients underwent 0.5 T or 1.0 T MR imaging and contrast-enhanced CT scans.
- Tumors showed intermediate signal intensity on T1-weighted MR images and variable intensity on T2-weighted images.
- Areas of signal void on MR imaging suggested blood flow, calcification, or hemorrhage; CT revealed uniform contrast enhancement.
Findings:
- Benign lesions histopathologically mimicked normal choroid plexus, confirming their highly vascular nature.
- MR imaging demonstrated intraventricular location and relation to normal anatomy.
- CT provided information on contrast enhancement patterns.
Implications:
- Multiplanar MR imaging offers superior visualization of CPPs compared to CT.
- Advanced imaging facilitates surgical planning and postoperative monitoring of these rare pediatric brain tumors.