weighted MRI with gadolinium or CT with contrast
Early-stage brain tumors are often misdiagnosed. A brain tumor should be considered in patients with any of the following:
Progressive focal or global deficits of brain function
New seizures
Persistent, unexplained, recent-onset headaches, particularly if worsened by sleep
Evidence of increased intracranial pressure (eg, papilledema, unexplained vomiting)
Pituitary or hypothalamic endocrinopathy