This patient is a known case of pulmonary tuberculosis, who has not completed the treatment.
Intracranial tuberculomas are space occupying lesions that result from hematogenous spread of primary infection from a distant focus. Histologically the central iso or hypointense area contains caseous necrosis surrounded by a capsule (enhancing) made up of fibroblasts, epithelioid cells, Langhans giant cells and lymphocytes.