{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,22]],"date-time":"2026-08-22T11:23:35Z","timestamp":1787397815874,"version":"build-2736575974"},"reference-count":5,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T00:00:00Z","timestamp":1774915200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T00:00:00Z","timestamp":1774915200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Epileptic Disorders"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Stereoelectroencephalography (SEEG) is a well\u2010established technique for localizing epileptogenic zones in patients with drug\u2010resistant epilepsy, including children. While considered safe, rare but serious complications can occur.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case Presentation<\/jats:title>\n                    <jats:p>We report the case of a girl with tuberous sclerosis complex and drug\u2010resistant epilepsy who underwent SEEG implantation as part of pre\u2010surgical evaluation. Electrode placement was uneventful. However, during SEEG monitoring, the signal was lost on two electrodes, raising suspicion of fracture. During explantation, these electrodes were not retrieved, as the distal ends were not visible. The removal of the remaining electrodes proceeded without complication. Nearly 3\u2009years later, the patient developed progressive gait instability. Imaging revealed migration of one electrode fragment into the spinal canal at the L4\u2013L5 level, in contact with the cauda equina, and another fragment into the left temporal horn of the lateral ventricle. The spinal fragment was successfully removed surgically without complication.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>To the best of our knowledge, this is the first reported case of brain and spinal migration of a retained fragment of a SEEG electrode. This case highlights a rare but potentially significant complication of SEEG implantation and discuss the management of electrode fragments.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/epd2.70230","type":"journal-article","created":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T14:04:16Z","timestamp":1774965856000},"page":"1274-1280","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Delayed brain and spine migration of a retained\n                    <scp>SEEG<\/scp>\n                    electrode fragment: An unexpected complication"],"prefix":"10.1002","volume":"28","author":[{"given":"Manel","family":"Krouma","sequence":"first","affiliation":[{"name":"Department of Pediatric Neurosurgery, La Timone Hospital Aix\u2010Marseille University  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7962-2942","authenticated-orcid":false,"given":"Julia","family":"Makhalova","sequence":"additional","affiliation":[{"name":"Epileptology Department, APHM Timone Hospital  Marseille France"},{"name":"INS, Institute of Systems Neuroscience Aix\u2010Marseille University, INSERM  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gauthier","family":"Toutain","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurology, La Timone Hospital Aix\u2010Marseille University  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesca","family":"Pizzo","sequence":"additional","affiliation":[{"name":"Epileptology Department, APHM Timone Hospital  Marseille France"},{"name":"INS, Institute of Systems Neuroscience Aix\u2010Marseille University, INSERM  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stanislas","family":"Lagarde","sequence":"additional","affiliation":[{"name":"Epileptology Department, APHM Timone Hospital  Marseille France"},{"name":"INS, Institute of Systems Neuroscience Aix\u2010Marseille University, INSERM  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne","family":"Lepine","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurology, La Timone Hospital Aix\u2010Marseille University  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1678-0297","authenticated-orcid":false,"given":"Fabrice","family":"Bartolomei","sequence":"additional","affiliation":[{"name":"Epileptology Department, APHM Timone Hospital  Marseille France"},{"name":"INS, Institute of Systems Neuroscience Aix\u2010Marseille University, INSERM  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Didier","family":"Scavarda","sequence":"additional","affiliation":[{"name":"Department of Pediatric Neurosurgery, La Timone Hospital Aix\u2010Marseille University  Marseille France"},{"name":"INS, Institute of Systems Neuroscience Aix\u2010Marseille University, INSERM  Marseille France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,31]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neucli.2017.11.005"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/epi.13298"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.3171\/2018.5.PEDS1856"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.3171\/2018.6.FOCUS18226"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1474\u20104422(15)00069\u20101"}],"container-title":["Epileptic Disorders"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/epd2.70230","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/epd2.70230","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/epd2.70230","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,22]],"date-time":"2026-08-22T10:48:41Z","timestamp":1787395721000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/epd2.70230"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,3,31]]},"references-count":5,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2026,8]]}},"alternative-id":["10.1002\/epd2.70230"],"URL":"https:\/\/doi.org\/10.1002\/epd2.70230","archive":["Portico"],"relation":{},"ISSN":["1294-9361","1950-6945"],"issn-type":[{"value":"1294-9361","type":"print"},{"value":"1950-6945","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,3,31]]},"assertion":[{"value":"2025-11-07","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication 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