CD33 and non-small cell lung carcinoma: High densities of CD68 + TAMs (median, 318.32 cells/mm2), CD68 + CD11b + myeloid dendritic cells (median, 231.11 cells/mm2), CD66b + PMNs (median, 83.79 cells/mm2), CD66b + CD11b + immature PMNs (median, 33.58 cells/mm2), and CD11b + CD66b + CD33 + granulocytic myeloid-derived suppressor cells (MDSC-PMNs; median, 11.44 cells/mm2) were predominantly observed in this NSCLC cohort, suggesting an important myeloid-suppressive component in these tumors.