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Asymmetric mamillary bodies: MR identification
1Department of Radiology, Milton S. Hershey Medical Center, Hershey, PA 17033.
Abstract:
We report three cases in which there was marked asymmetry of the mamillary bodies, noted on MR in two and at autopsy in the third. Based on its proposed pathogenesis, we suggest that this finding could have value in locating temporal lobe disease in patients with intractable epilepsy.
Insights
Marked asymmetry of the mamillary bodies, observed in three patients, may help pinpoint temporal lobe epilepsy. This finding offers a potential new biomarker for localizing the source of intractable seizures.
Area of Science:
- Neurology
- Neuroimaging
- Pathology
Background:
- Intractable epilepsy often necessitates precise localization of the epileptogenic zone.
- The mamillary bodies are key structures within the temporal lobe, implicated in memory and limbic system functions.
Observation:
- Three cases demonstrated significant asymmetry in the size and/or shape of the mamillary bodies.
- This asymmetry was identified using magnetic resonance (MR) imaging in two cases and confirmed post-mortem in one case.
Findings:
- The observed mamillary body asymmetry is hypothesized to arise from specific pathological processes.
- This asymmetry may serve as a potential imaging marker for underlying temporal lobe pathology.
Implications:
- Mamillary body asymmetry could be a valuable indicator for neurologists in localizing disease in patients with medically refractory epilepsy.
- Further research is warranted to validate this finding as a diagnostic tool in epilepsy surgery planning.
