CD68 and neoplasm: We found that tumor CD47 expression (HR = 1.703; p = 0.038), CD68+ M (HR = 1.853; p = 0.012), CD163+ M2 (HR = 1.898; p = 0.014), tumor diameter (HR = 1.626; p = 0.047), grade (HR = 1.745; p = 0.011), and N stage (HR = 1.831; p < 0.001) were independent factors associated with OS (Additional file 1: Table S2).