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Κυριακή 19 Μαρτίου 2017

Dramatic response after functional hemispherectomy in a patient with epileptic encephalopathy carrying a de novo COL4A1 mutation

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Publication date: April 2017
Source:Brain and Development, Volume 39, Issue 4
Author(s): Naomi Hino-Fukuyo, Atsuo Kikuchi, Masaki Iwasaki, Yuko Sato, Yuki Kubota, Tomoko Kobayashi, Tojo Nakayama, Kazuhiro Haginoya, Natsuko Arai-Ichinoi, Tetsuya Niihori, Ryo Sato, Tasuku Suzuki, Hiroki Kudo, Ryo Funayama, Keiko Nakayama, Yoko Aoki, Shigeo Kure
We describe the first case of a successful functional hemispherectomy in a patient with epileptic encephalopathy and a de novo collagen type IV alpha 1 (COL4A1) mutation. A 4-year-old girl was COL4A1 mutation-positive and suffered from drug-resistant epilepsy, hemiplegia, and developmental delay. Magnetic resonance imaging detected no porencephaly, and she had no cataract or renal abnormality. Following a presurgical evaluation for epilepsy, she underwent a functional hemispherectomy. She has been seizure free with no intracranial hemorrhage or other perioperative complications. Patients with a COL4A1 mutation have an increased risk for intracranial hemorrhage because of disrupted integrity in the vascular basement membrane due to the mutation. After weighing the risks and benefits to these patients, epilepsy surgery may not be absolutely contraindicated. Furthermore, pediatric neurologists should be aware of an undiagnosed COL4A1 mutation when a patient presents with an unexplained neurological phenotype, such as mild hemiparesis, even in the absence of porencephaly.



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