Relationship between clinicopathological or CSF factors and tumor‐associated macrophage (TAM) infiltration rate: (A) age, (B) number of tumor, (C) performance status (PS), (D) cerebrospinal fluid (CSF) interleukin‐10 (IL‐10), (E) CSF IL‐6, (F) CSF IL‐10/IL‐6 ratio, (G) CSF sIL‐2R, (H) CSF LDH. Higher CSF IL‐10 levels (≥51 pg/mL) were statistically correlated with a higher infiltration of CD68+ and CD163+ TAMs. Higher CSF IL‐10/IL‐6 ratio (≥8.6) was statistically correlated with a higher infiltration of CD68+, CD163+ and CD204+ TAMs.