摘要
To the Editor： Invasive electroencephalography （EEG） monitoring using subdural electrodes is widely applied in clinical practice. Here, we report a rare complication related to this technique, nonhemorrhagic subdural fluid collection （SFC）.A 14-year-old female was admitted to Beijing Tiantan Hospital with ictal twitch and loss of consciousness. She had no other medical history. Magnetic resonance imaging （MRI） revealed a lesion in the right parietooccipital lobe. Scalp EEG failed to detect abnormal discharges in this area. To further locate the epileptic loci, subdural electrodes were placed on the surface of the parietooccipital area, the temporal lobe, and the frontal lobe. Postoperative computed tomography （CT） scan （8 h after the operation） revealed no signs of hemorrhage [Figure l a]. However, 14 h later, the patient was found drowsy with unequal pupils and a blunt light reflex. Repetitive CT scans showed SFC in the right frontal region near the strip and signs of brain herniation [Figure lb and c]. An emergency operation was performed. No sign of intracranial hemorrhage was found. The electrodes were removed, and the presumed lesion was resected [Figure l d]. After the operation, her condition stabilized and was discharged 2 weeks later. She reported no seizure recurrence in the 10-month＇s follow-up.
To the Editor： Invasive electroencephalography （EEG） monitoring using subdural electrodes is widely applied in clinical practice. Here, we report a rare complication related to this technique, nonhemorrhagic subdural fluid collection （SFC）.A 14-year-old female was admitted to Beijing Tiantan Hospital with ictal twitch and loss of consciousness. She had no other medical history. Magnetic resonance imaging （MRI） revealed a lesion in the right parietooccipital lobe. Scalp EEG failed to detect abnormal discharges in this area. To further locate the epileptic loci, subdural electrodes were placed on the surface of the parietooccipital area, the temporal lobe, and the frontal lobe. Postoperative computed tomography （CT） scan （8 h after the operation） revealed no signs of hemorrhage [Figure l a]. However, 14 h later, the patient was found drowsy with unequal pupils and a blunt light reflex. Repetitive CT scans showed SFC in the right frontal region near the strip and signs of brain herniation [Figure lb and c]. An emergency operation was performed. No sign of intracranial hemorrhage was found. The electrodes were removed, and the presumed lesion was resected [Figure l d]. After the operation, her condition stabilized and was discharged 2 weeks later. She reported no seizure recurrence in the 10-month＇s follow-up.
