Relevant research has shown that dendritic cells may result in the tumor progression by affecting the tumor angiogenesis and causing immune dysregulation (44), whereas significant infiltration of activated CD8+ T cells, Th1 cells suggests a higher risk of recurrence (45–47), and significant infiltration of macrophages in thyroid cancer is strongly linked to tumor invasion and short survival (48). The gene discussed is CD8A; the disease is neoplasm.