Autopsy of the body of a 52-year-old man, who had a long history of tuberculous prostatitis and died of meningoencephalitis. detected a large number of dense gray nodules 0.5-1 mm in diameter in the pia mater at the basal and lateral surfaces of the brain, spleen kidneys, and liver Histologically. these nodules consist of epithelioid, lymphoid and a small number of giant cells with horseshoe-shaped nuclei located at the periphery of the cell. These changes indicate