CD163 and neoplasm: Kaplan–Meier analysis revealed that patients whose tissues were mainly infiltrated by cytotoxic T lymphocytes displayed a trend toward a better PFS (HR = 1.452, p = 0.228) whereas a shorter PFS was associated to patients whose tissues were highly vascularized (HR = 3.135, p = 0.057) and/or massively infiltrated by CD163 positive macrophages (HR = 3.774, p = 0.052) (Figure 4), indicating that a relationship between the number of TAMs infiltrating tumor tissues and poor prognosis of MLPS patients does exist.