Miliary TB

1.       What is the type of tissue necrosis shown?

Caseous necrosis

2.       What are the characteristic histopathological features of the necrosis?

�       Structureless amorphous sheet of eosinophilic, granular material rimmed by granulomatous reactin (increase infiltration by macrophages and plasma cells)

�       Cellular debris

�       Fragmented cells.

3.       What is the etiology?

Tuberulosis bacillus

4.       State whether the following statements are True or False :-

    This type of necrosis

(a)     is cheese like                T

(b)     preserves the tissue architecture          F

(c)     is due to destructive enzymes produced by bacilli    F

(d)     is due to an immune hypersensitivity reaction    T

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Copyright � Joseph Ong 2003