“…In our study, there were many similarities between the patients in these two groups with regard to clinical characteristics, routine pericardial fluid parameters, and classical biochemical parameters. There are a number of patients who have malignant pericardial effusion but show no evidence of cancer cells or primary tumor lesions, making it easy to misdiagnose tuberculous pericardial effusion [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]. Malignant pericardial effusion is generally caused by cancerometastasis; however, primary pericardium tumors such as mesothelioma, sarcoma, and cardiac hemangioma are rare [18].…”