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Table 2 Metastatic survival according to age, gender, and tumor characteristics (n = 108)

From: Risk factors affecting prognosis in metachronous liver metastases from WHO classification G1 and G2 gastroenteropancreatic neuroendocrine tumors after initial R0 surgical resection

Characteristics Median OS
(Months)
95% CI 3-year Survival rate P-value
Age < 60 32.0 29.7–54.3 24.2% 0.818
≥60 28.0 20.1–46.0 22.3%  
Gender Male 22.8 6.2–39.4 15.4% 0.287
Female 44.9 18.9–62.9 25.6%  
Primary tumor Grade G1 70.0 40.2–98.1 21.74% 0.0028
G2 28.0 18.7–36.1 6.25%  
Hepatic Tumor Number Single 44.6 23.3–65.9 23.5% 0.000
Multiple 13.0 9.5–16.6 5.3%  
Lymph-node meta Present 32.0 11.3–52.7 11.3% 0.035
Absent 53.0 10.4–75.6 23.3%  
Tumor origin Pancreas 44.6 17.9–71.3 0.273
GI tract 22.6 12.3–33.0  
Treatment modalitiesa Local treatment 60.0 39.0% 0.009
Systemic treatment 13.0 16.8%  
Combined treatment 27.0 25.6%  
Longest hepatic tumor diameter > 4.5 cm 32.0 12.1–51.8   0.343
≤4.5 cm 39.7 29.9–71.4   
  1. aThe treatment modality was the treatment dealing with the hepatic metastatic masses