Pericarditis

OVERVIEW
Inflammatory condition of the parietal (pericardial sac) and/or visceral (epicardium) pericardium; clinical syndromes caused by pericardial effusion, constrictive pericarditis, inflammatory extension to surrounding tissues (pleural, myocardium), or the underlying cause of the pericarditis
In dogs—most commonly seen as idiopathic hemorrhagic pericarditis, is a mild inflammatory condition that can lead to life-threatening pericardial effusion and tamponade

SIGNALMENT
Dogs and cats
Idiopathic hemorrhagic pericarditis more common in young to middle-aged, medium to large-breed dogs (e.g., great Pyrenees, Great Dane, Saint Bernard, golden retriever); males predisposed
Others depend on the underlying disease.