Hi, Thanks for writing in. Sorry to hear about the disease progress in your mother and hope she is responding to treatment being given by her doctors. If the lung cancer has involved the stomach, brain and adrenal gland then it is in aggressive form and has spread to more than one organ and this makes it stage 4 cancer. As there is a metastasis to the brain and that can cause seizures, it will help to give her anti epileptics and anti edema medicine. Dexamethasone is a steroid and will reduce brain swelling. Unfortunately the survival in a stage 4 patient is from 6 months to 2 years. At this time chemotherapy and radiation might be strong for her to tolerate and she is too weak to be put under more aggressive treatment. The objective right now must include reducing her symptoms like seizures and also giving her pain relief and making her comfortable. Please do not worry.