Symptoms of advanced brain cancer may include disturbance of vital signs, consciousness disorders, and neurological disorders.

1. Disturbance of vital signs: The disturbance of vital signs is mainly due to the severe symptoms of brain cancer, which can cause severe stimulation to the brain nerves, and even lead to the disturbance of vital signs.

2. Consciousness disorders: Consciousness disorders, if caused by advanced brain cancer, can cause severe damage to brain nerves, leading to consciousness disorders, and even drowsiness and somnolence.

3. Neurological disorders: Neurological disorders occur due to a sustained increase in intracranial pressure, which can lead to cerebral herniation, and even cause the failure of cranial nerve function in the brainstem, thus triggering neurological disorders.

If the symptoms are severe, they may even pose a serious threat to life, and radiotherapy, chemotherapy, or surgery can be chosen for treatment.