Characteristics of various types of inflammation that appear after pigs develop disease

Serous inflammation: characterized mainly by serous exudation, commonly occurring in loose connective tissue (edema), mucosa and serosa (effusion); the inflammation is relatively mild and tends to resolve easily, but a large amount of effusion in the pericardial cavity and pleural cavity can compress the heart and lungs and affect their function.

Fibrinous inflammation: inflammation characterized mainly by fibrinous exudation, commonly occurring in mucosa (larynx, intestinal mucosa) and serosa and lung (pleura, peritoneum, pericardium). When the amount is small, it is dissolved and absorbed; when the amount is large, it causes thickening and adhesion of the serosa.

Purulent inflammation is divided into three types: surface suppuration and empyema, phlegmon, and abscess.

Hemorrhagic inflammation: the exudate contains a large number of red blood cells.