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Related Experiment Video

Updated: Sep 28, 2025

Stereo-Electro-Encephalo-Graphy SEEG With Robotic Assistance in the Presurgical Evaluation of Medical Refractory Epilepsy: A Technical Note
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Neuropathologic changes associated with stereoelectroencephalography depth electrode placement.

Nolan K Winslow1, Elsa A Olson2, Sarah E Bach3

  • 1Department of Neurosurgery, OSF Saint Francis Medical Center, Peoria, IL, USA - nolan.k.winslow@osfhealthcare.org.

Journal of Neurosurgical Sciences
|April 5, 2022
PubMed
Summary
This summary is machine-generated.

Stereoelectroencephalography (SEEG) electrode placement in epilepsy surgery can cause iatrogenic neuropathologic changes, including microinfarcts and inflammation. Further research is needed to understand the long-term clinical significance of these electrode-induced injuries.

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Area of Science:

  • Neuropathology
  • Neurosurgery
  • Epileptology

Background:

  • Stereoelectroencephalography (SEEG) is a crucial tool for localizing epileptogenic zones in medically refractory epilepsy.
  • Surgical placement of SEEG leads can lead to iatrogenic neuropathologic changes.
  • Awareness of these changes is vital for healthcare providers specializing in epilepsy care.

Purpose of the Study:

  • To detail the neuropathologic changes associated with SEEG lead placement.
  • To highlight iatrogenic pathology resulting from SEEG procedures.
  • To inform epilepsy specialists about potential electrode-induced brain alterations.

Main Methods:

  • Analysis of five epilepsy patient resection specimens post-SEEG monitoring.
  • Gross and complete microscopic examination by a neuropathologist.
  • Documentation of seizure-related pathologies and SEEG electrode-related histologic changes.

Main Results:

  • All specimens exhibited seizure-related pathologies.
  • Multiple microinfarcts correlated with SEEG electrode placement and size were observed in all cases.
  • Patchy leptomeningeal chronic inflammation was present in most specimens.

Conclusions:

  • SEEG is effective for identifying epileptogenic regions and guiding epilepsy surgery.
  • Microinfarcts and chronic inflammation are common post-SEEG, but detailed studies are scarce.
  • The long-term clinical impact of electrode-induced injuries requires further investigation.