Fish Diseases and Management

2.1.9.2 Chronic inflammation

Chronic inflammation

ailure of the acute inflammation lesions to resolve leads to chronic inflammation, which in contrast to acute inflammation  does not resolve quickly. it is characterized by simultaneous inflammation and proliferation of neighbouring support tissue.

Granulomata

Chronic inflammation some times  lead to a progressive  lesion progressing to fibrosis and lesion is  known as granuloma. Granuloma is defined as a mass of inflamed granulation tissue, usually associated with ulcerated infections. It is a white to yellow in colour which may have a cheesy  or hard consistency or even be calcified.  It may be caused by foreign bodies such as silicaceous diatoms, bacteria such as Myxobacterium tuberculosis and Reninbacterium salmoninarum or fungi