We observed a decrease/loss of association of TSPO expression and CD68 expression with increasing tumor cell content (no tumor: r = 0.686, p < 0.001; some tumor: r = 0.414, p < 0.001; infiltration zone: r = 0.403, p < 0.001; solid tumor: r = 0.027, p = 0.472). Here, CD68 is linked to neoplasm.