CD4 and neoplasm: The characteristics of tumor‐infiltrating immune cells between high‐ and low‐risk patients indicated that patients in the former group had significantly higher proportions of immunosuppressive cells (Tregs, M0 macrophages, and follicular helper T cells) and lower fractions of immunocompetent cells (naive B cells, resting CD4 memory T cells, resting NK cells, monocytes, M1 macrophages, and resting mast cells), suggesting the prevalence of an immunosuppressive tumor microenvironment.