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Actuarial probability curve of continued survival in patients with primary duodenal carcinomas after 6 months (A), 1 year (B), 2 years (C), and 5 years (D). Patients with cancer-directed treatment versus those without cancer-directed treatment compared using the log-rank test at 6 months (71.4 vs. 25.0%, p < 0.01), 1 year (28.6 vs. 6.3%, p < 0.01), 2 years (21.4 vs. 0%, p < 0.01), and 5 years (14.3 vs. 0%, p < 0.01).
