Related Experiment Video
Updated: May 8, 2026

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
Published on: September 20, 2024
29 Year-old man with new onset seizures
Abstract:
Imaging of a 29-year-old man with seizures showed a frontal lobe mass with curvilinear narrow calcifications, cystic components and multiple flow-voids. An AVM was considered. A DSA confirmed the hypervascular nature of the lesion. It was resected and microscopic examination showed an anaplastic oligodendroglioma remarkable for a diffuse and hypertrophic vasculature with areas of frank vascular proliferation. The marked vascularity seen on the MRI, the gyriform calcifications and the cystic degeneration are all features which can be encountered in an AVM. This case illustrates that highly vascular malignant gliomas can simulate vascular lesions by radiology and may require an angiogram for diagnosis.
Insights
Highly vascular anaplastic oligodendroglioma can mimic arteriovenous malformations (AVMs) on imaging. This case highlights the importance of diagnostic angiography in differentiating these conditions.
Area of Science:
- Neuroradiology
- Neuro-oncology
- Neuropathology
Background:
- Frontal lobe masses can present with complex imaging features.
- Arteriovenous malformations (AVMs) are a differential diagnosis for hypervascular brain lesions.
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