FLT3 (Figure 4A), IL‐11 (Figure 4B), ST2 (Figure 4C), IL‐13 (Figure 4D), IL‐1β (Figure 4E), and CHI3L1 (Figure 4F,G) were up‐regulated in monocyte‐CM from PCa‐M but not from PCa‐N and HC. Here, CHI3L1 is linked to posterior cortical atrophy.