A 40-year-old man presents with headache, blurry vision, and difficulty walking. Initial examination and symptoms suggest a potential brain tumor. MRI, however, does not show any signs of a tumor. What could be the diagnosis?
These symptoms may initially suggest a brain tumor, but with a negative MRI, one should consider another diagnosis such as idiopathic intracranial hypertension (IIH), also known as pseudotumor cerebri. This condition is characterized by increased intracranial pressure, leading to symptoms similar to a brain tumor. Diagnosis often involves a lumbar puncture showing elevated opening pressures with normal cerebrospinal fluid analysis.