Although epilepsy surgery is considered relatively safe, certain risks do remain. The neurologist and neurosurgeon will explain the risks of each surgery. A small loss of vision opposite the side of surgery. Other Resective Surgery Other types of surgery may be done such as removal of tumors, abnormal collections of blood vessels, and congenital lesions, all of which can cause seizures. During resective surgery, the lesion as well as the tissue around it is removed if monitoring has shown that seizures begin in that area.
Risks are similar to the lobectomy procedure.
Another major type of epilepsy surgery is dividing the corpus callosum. This stops the spread of seizures from one side of the brain to the other and is only done when the origin of a seizure cannot be found. During the operation, the nerve fibers that connect one side of the brain to the other, called the corpus callosum, are cut. No tissue is removed. This procedure is most helpful for generalized tonic clonic or grand mal seizures and drop attacks.