• 1. Department of Functional Neurosurgery, the Second Hospital of Lanzhou University, Lanzhou 730030, China;
  • 2. Department of Neuroelectrophysiology, the Second Hospital of Lanzhou University, Lanzhou 730030, China;
  • 3. Department of Epilepsy Medicine, the Second Hospital of Lanzhou University, Lanzhou 730030, China;
ZHANG Xinding, Email: 1436395149@qq.com
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Objective To explore the clinical electrophysiology, seizure symptomatology, multimodal imaging characteristics and epileptogenic zone location of the temporal -parietal -occipital junction (TPOJ) epilepsy.Methods The seizure symptomatology, head MRI, PET-CT and their fusion manifestations, long-range scalp video EEG monitoring results of 6 cases of TPOJ epilepsy patients from March 2015 to August 2018 were analyzed retrospectively in the Second Hospital of Lanzhou University, and the value of localization of epileptogenic zone was analyzed, and the role of multi-modal evaluation based on SEEG in localization of epileptogenic zone was discussed.Results The first symptoms: 2 of 6 patients were complicated visual hallucination; 3 were head eye deflection (2 were opposite to epileptogenic focus, 1 was ipsilateral); 1 was excessive movement. EEG of scalp: the epileptogenic potentials in intermittent period were all multi -brain regions, but could be lateralized; in seizure period, the electroencephalogram was diffuse in 4 cases, without lateralization, and could be lateralized in 2 cases (1 case was the beginning of one hemisphere, 1 case was the beginning of one posterior head). Imaging findings: MRI was negative in 2 cases, post-traumatic soft focus in 2 cases, and FCD in 2 cases; after fusion of MRI and PET-CT, low metabolic areas in a large area including TPOJ could be found. Six patients were implanted with stereotactic electrodes, and the epileptogenic focus could be identified by EEG monitoring after implantation.Conclusion For TPOJ epilepsy, the manifestations of premonitory and multimodal images at the onset of seizure can provide important clues for the lateralition of epileptogenic zone; scalp EEG and the first symptoms except premonitory can only provide reference clues; multimodal evaluation based on stereoelectroencephalogram can accurately locate the onset of seizure.

Citation: HAN Yanming, SHEN Yunjuan, SHI Zhe, LAN Zhenbo, LIU Yali, HE Wenbin, WANG Xiaoqiang, YANG Wenzhen, SHI Xuefeng, YANG Bohui, WANG Tiancheng, MENG Xiaoxu, ZHANG Xinding. To study the clinical characteristics of epilepsy and the lateralition of epileptogenic zone in the tempor-parietal -occipital junction. Journal of Epilepsy, 2020, 6(6): 492-497. doi: 10.7507/2096-0247.20200081 Copy

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