MKI67 and neoplasm: Most importantly, we show that women demonstrate a lower Ki-67 index, while all other parameters including patients ́ age, concomitant diseases, tumor origin, tumor stage, site of metastases, ECOG and applied treatment were similar between male and female, highlighting that—at least in our cohort of patients—the impact of the patients ́ sex on both clinical and pathological features of NEN is limited.