The First Question: Is This Epilepsy Suitable for Surgery?
The epilepsy-surgery journey begins not with a scalpel but with meticulous assessment, because the success of the operation depends on whether seizures arise from a single, well-defined focus. To understand this we use video-EEG monitoring (simultaneous recording of brain waves and video while the patient has a seizure), high-resolution epilepsy-protocol MRI, neuropsychological testing, and in selected cases PET, SPECT or invasive electrode placement. If all of this data points to the same region, the chance of a good surgical outcome is high; if the data is scattered, or the focus is intertwined with critical areas such as speech or movement, the strategy changes. For this reason epilepsy surgery is never a single physician’s decision; it is a team decision involving the neurologist, neurosurgeon, neuroradiologist and neuropsychologist.
For Which Patient Is It Considered?
Surgical evaluation typically comes to the fore in these situations: seizures persisting despite two suitable antiepileptic drugs (drug-resistant epilepsy), a structural cause seen on MRI that matches the seizure focus (for example mesial temporal sclerosis, cortical dysplasia, a benign tumor or a cavernoma), and seizures that seriously disrupt quality of life, work, education or safety. In childhood, early surgery carries particular importance for protecting development. By contrast, in patients with several independent foci, well-controlled seizures, or a generalized (whole-brain) epilepsy type, resective surgery is usually not appropriate; in such patients neuromodulation methods such as vagus nerve stimulation (VNS) may be considered.
Surgical Options: Not a Single Operation
Epilepsy surgery is not one technique but a family of methods. One of the most common is temporal lobectomy / amygdalohippocampectomy for temporal-lobe seizures, with a high seizure-free rate in appropriately selected patients. If the focus is confined to the brain surface, lesionectomy (removing only the responsible lesion) is preferred. If the focus is in too critical a region to remove, disconnective procedures or neuromodulation methods are considered to stop the seizure from spreading. In contemporary practice neuro-navigation, intraoperative mapping and, when needed, awake surgery make it easier to reach the focus while preserving healthy functions. Which technique is chosen depends entirely on the patient’s evaluation results.
The Process and Recovery
Pre-operative assessment usually involves several days of inpatient video-EEG and imaging stages; this part can take longer than the operation itself but is at least as decisive. Resective operations are most often performed under general anesthesia — with an awake technique when needed for foci adjacent to speech or movement areas — and typically last a few hours. The hospital stay is usually a few days. After surgery, medications are not stopped immediately; following a seizure-free observation period, a gradual reduction may be planned under the neurologist’s supervision. Cognitive functions (especially memory and language) are assessed with pre-operative neuropsychological tests, which is critical both for anticipating risks and for selecting the right patient.
Expectations and Risks — Honestly
Although the goal of epilepsy surgery is not always complete freedom from seizures, in most suitable patients a marked reduction in seizure frequency or full control is achievable; results are especially encouraging in well-defined foci such as mesial temporal sclerosis. No outcome, however, can be guaranteed. Risks vary with the focus location: bleeding, infection, temporary or permanent neurological effects related to the surgical area (changes in visual field, memory or language), and rarely continuing seizures. For this reason the expected benefit and the possible risk are discussed openly before surgery in every case. Our aim is not to promise miracles, but to determine together the most realistic and safest path for you.