Problem: The nurse recognizes which 4 characteristics are associated with brain tumors? Need Assignment Help? 1. Nausea and vomiting occur from increased intracranial pressure (ICP). 2. Cognitive function is usually unaffected. 3. Headaches are an uncommon symptom. 4. Gliomas originate within brain tissue. 5. Metastatic brain tumors are the most common brain tumors. 6. Seizures are a common client finding. 7. Supratentorial tumors are located near the brainstem.