infectious diseases
Extrapulmonary Tuberculosis (TB)
Pericardial tuberculosis (TB pericarditis)
Pericardial infection may develop from foci in mediastinal lymph nodes or from pleural TB. In some high-incidence parts of the world, TB pericarditis is a common cause of heart failure. Patients may have a pericardial friction rub, pleuritic and positional chest pain, or fever. Cardiac Tamponade may occur, causing dyspnea, neck vein distention, paradoxical pulse, muffled heart sounds, and possibly hypotension. 