TUBERCULOSIS OF THE BRAIN. 



427 



connective-tissue elements the neuroglia, cells and fibres; 

 and a partial or complete atrophy of the parenchyma the 

 ganglion-cells and nerve-fibres. The lesion may be confined 

 to a lobe. In other cases, especially in drunkards and in 

 general paralysis of the insane, the greater part of the brain 



FIG. 196. 



Sarcoma of brain (TJ. S. A. Museum, No. 7983). 



may be involved. In still other instances there are multiple 

 areas of sclerosis irregularly distributed throughout the brain 

 and cord, the grayish or grayish-pink plaques varying in size 

 from that of a pea to that of an almond. 



Tuberculosis of the brain the most frequent " tumor " for- 

 mation is a common lesion, presenting usually as caseous, 

 circumscribed nodular masses the size of an egg or larger. 



