NCAM1 and posterior cortical atrophy: We compared the infiltration of immune cells between the PCa-HR and PCa-LR groups and found that the PCa-LR group had a higher proportion of CD56 bright natural killer cells, central memory CD4 T cells, immature dendritic cells, mast cells, monocytes, natural killer cells, plasmacytoid dendritic cells, and T follicular helper cells.