“…3,4,20 In patients with chronic unexplained pericarditis, PCR identified Actinomyces neuii, Tropheryma whipplei, and Mycobacterium tuberculosis. 1,5,15,16 Interestingly, most cases of tuberculous pericarditis did not present with typical pulmonary symptoms or miliary tuberculosis. Therefore, diagnosis was delayed and the risk of heart failure and other complications were increased.…”