Fig. 7From: A novel staging system and clinical predictive nomogram for more accurate staging and prognosis of malignant pancreatic intraductal papillary mucinous neoplasms: a population-based studyThe median OS with surgery (yes or no) (A), chemotherapy (yes or no/unknown) (B) in stage I, II, III and IV based on AJCC modified in the entire cohort. Significance was determined by log-rank tests. *p < 0.05; **p < 0.01; ***p < 0.001Back to article page