On multivariate analysis, we found that age at diagnosis, sex, tumor differentiation grade, lymph node metastases, and surgical treatment were independent risk factors for prognosis ( P < .05, Table 2 ), whereas both tumor size ( P = .064) and marital status ( P = .051) had borderline significance (Table 2 ). 3.3.
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Nomogram for predicting survival of patients with metastatic nonfunctioning pancreatic neuroendocrine tumors: A SEER based study.
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