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MRI of intracranial subependymomas
J E Silverstein1, L Lenchik, M G Stanciu
1Department of Radiology, Bridgeport Hospital, CT 06610.
Journal of Computer Assisted Tomography
|March 1, 1995
Summary
Subependymomas are rare benign brain tumors. Magnetic resonance imaging (MRI) is crucial for diagnosing these intraventricular neoplasms and understanding their extent.
Area of Science:
- Neurology
- Radiology
- Oncology
Background:
- Subependymomas are rare, benign intraventricular neoplasms.
- This study details imaging findings in two distinct subependymoma cases.
Observation:
- Case 1: A large, asymptomatic lateral ventricular subependymoma without postcontrast enhancement.
- Case 2: A fourth ventricular subependymoma with extensive cisternal spread and heterogeneous enhancement.
Findings:
- Pre- and postoperative MRI demonstrated superior visualization of tumor extent and surrounding anatomy compared to other modalities.
- Imaging features can vary, with absence of enhancement suggesting diagnosis in some cases, while heterogeneous enhancement can create diagnostic uncertainty.
Implications:
- Magnetic resonance imaging (MRI) is the preferred imaging modality for evaluating subependymomas.
- Subependymoma should be considered in the differential diagnosis of intraventricular tumors.