TNF and myocardial infarction: There were no statistically significant differences between the levels of TNF-α in the pericardial fluid in the group with no previous MI, the anterior MI and the posterior/inferior MI groups (13.08 ± 8.66, 19.01 ± 10.37 and 14.99 ± 6.85 pg/ml, p = 0.203) (Fig. 2B).