CCR2 and thyroid cancer: In Imam et al., 2019 [12], the focus was on understanding the dynamics between Natural Killer (NK) cells and macrophage (CD68+) polarization (M1 [CCR2+, CXCR1+] vs. M2 [ARGINASE1+, DECTIN1+]) in these two diseases’ backgrounds; and how these immune cells influence the progression of thyroid cancer.