Since the number of infiltrating CD163 positive macrophages appeared to better discriminate high grade from low grade MLPS tissues, the occurrence of any relationship between CD163+ macrophages and patient age, maximal tumor size as well as average counts/field of CD3+, CD4+, CD8+, and CD68+ cells were subjected to Pearson correlation analysis (Table S3). This evidence concerns the gene CD8A and neoplasm.