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Disease-specific survival according to pathological features in 25 PanNETs. Disease-specific survival of patients is significantly affected by tumor grade (A) (p = 0.0013) and stage (B) (p = 0.0007). Follow-up time is expressed in months. Kaplan–Meier and log-rank statistics were used to determine levels of significance. Follow-up time was curtailed at 100 months when the total number of patients at risk was 5 (20%) and thus no longer informative.
