Lumbar puncture was performed. Mycobacterium tuberculosis was detected in the CSF. The patient was started on ATT and his condition improved.
Various forms of CNS tuberculosis can be detected on imaging evaluation. The most common forms include leptomeningitis, pachymeningitis, tuberculoma, cerebritis, abscess formation, and encephalitis. Each of these forms has its own appearances or may coexist with differential diagnoses on imaging. One of the differential diagnoses, in this case, would be neurocysticercosis, however, leptomeningeal involvement is uncommon and usually involves the basal cisterns.