PTX3 and neoplasm: The results showed that, compared with the T1MI group, the LUAD + T1MI group exhibited significantly increased expression of CD8 (Figure 11b), PTX3 (Figure 11d) and FOXP3 (Figure 11f) in coronary thrombi (p < 0.05), suggesting that a tumour background may enhance local T cell infiltration, inflammatory response and regulatory T cell (Treg) activity.