Fig. 2From: Risk factors affecting prognosis in metachronous liver metastases from WHO classification G1 and G2 gastroenteropancreatic neuroendocrine tumors after initial R0 surgical resectionOS curves stratified by comparison of Ki-67 indices between hepatic and primary lesions in GEP-NET patients; an elevated Ki-67 index was associated with a shorter OS duration (P = 0.022)Back to article page