ITGAM and neoplasm: What is more, the non-T CD45+ immune cells, more specifically, the CD11B+ myeloid cells, including the monocytic myeloid-derived suppressor cells (M-MDSCs) that are monocytes characterized by its immunosuppressive activity and tumor-promoting function and the tumor-associated macrophages (TAMs), are found to have the highest FDG uptake levels.