Tumor One-sided paralysis is the most common symptom. This tumor might invade other areas of the cerebral hemispheres and produce symptoms common to tumors in those locations. Seizures are uncommon. A tumor in the middle of the corpus callosum might cause few, if any, symptoms until it grows quite large. This tumor might invade other lobes of the cerebral hemispheres and produce symptoms common to tumors in those locations.
Seizures are uncommon.
The hypothalamus controls thirst and urination, sleep, body temperature, appetite, and blood pressure. The hypothalamus coordinates patterns of activity and controls emotions. It is also the control center for the pituitary gland. The medulla oblongata, a part of the brain stem, controls swallowing, tongue movement, breathing, heart beat, and vomiting. See Brain Stem Tumor.