The CSF culture revealed no growth of microorganisms. The case was handled as aseptic meningitis, which basically corresponds to an inflammation of the brain meninges not caused by pus-producing bacteria. Causes of this type of meningitis are viruses and non-infectious conditions such as systemic lupus erythematosus, lymphoma, leukemia, and NSAIDs and other drugs. 

Enteroviruses infection is considered the main cause, particularly during summer and autumn ¹. 

It is important to note how the addition of a post-contrast FLAIR sequence helped in spotting the meningeal enhancement. MRI protocols for brain infection or leptomeningeal diseases can be benefited from this acquisition.