Our results are consistent with their results in terms of leptin, but in contrast, we did not observe statistically significant correlations and differences in adiponectin concentration depending on Ki-67 and tumor grading, which is also contradictory with the results obtained by Zyromski et al. which reported that serum adiponectin concentration correlated negatively with tumor proliferation [124]. Here, MKI67 is linked to neoplasm.