Inflammation of the pericardium is pericarditis
May result in restriction of ventricular movement => acute or chronic circulatory failure. Possible pathogenesis:
1. Haematogenous spread, secondary to septicaemia
2. Traumatic penetration by foreign bodies (from the oesophagus or reticulum) or fractured rib
3. Extension of infection from surrounding tissues (lungs, pleura, mediastinum or myocardium)
Pericarditis is associated with inflammatory exudation, and can be fibrinous (due to increased vascular permeability) or suppurative (with pus formation).