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Updated: Jul 1, 2025
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Published on: June 13, 2016
Retained Intracerebral Depth Electrode after Stereotactic Electroencephalography Monitoring: A Case Report
Kota Kagawa1,2, Koji Iida2, Akira Hashizume1,2
1Department of Neurosurgery, Hiroshima University Hospital, Hiroshima, Hiroshima, Japan.
A retained stereotactic electroencephalography electrode required surgical removal due to osteogenesis. This case highlights the need for anchor bolts to prevent complications during electrode extraction in epilepsy surgery.
Area of Science:
- Neurosurgery
- Epileptology
Background:
- Stereotactic electroencephalography (SEEG) is a key surgical method for identifying the epileptogenic zone.
- Robot-guided SEEG electrode placement is covered by Japanese National Health Insurance, but essential devices like anchor bolts remain unapproved.
Observation:
- A 14-year-old female with intractable epilepsy experienced a retained depth electrode after SEEG monitoring.
- The electrode became lodged due to osteogenesis, narrowing the cranial twist drill hole pathway.
Findings:
- The retained electrode necessitated a secondary surgical procedure involving a skin incision and craniectomy for removal.
- Fixation solely by sutures, without anchor bolts, contributed to the complication.
Implications:
- This case underscores the importance of approving anchor bolts to prevent SEEG electrode retention and facilitate removal.
- Further research into thinner, more consistently hard depth electrodes is recommended to improve patient safety and surgical outcomes.
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