TNNI3 and neoplasm: There have been a limited number of studies on the use of cardiac Troponin I (cTnI) in diagnosing viral acute pericarditis [2], adenosine deaminase (ADA) in pericardial fluid for tubercular pericarditis [3], and classical serum tumour markers like Carcinoembryonic Antigen (CEA) for neoplastic pericarditis [4].