The maximum tumor diameter and the number of positive lymph nodes were slightly higher in the DPC group compared to those in the AVC group (1.9 ± 1.71 cm vs 1.7 ± 1.5 cm; 0.82 ± 2.6 vs 0.62 ± 1.2, respectively), yet these differences did not reach statistical significance ( P = 0.59 and P = 0.83, respectively).
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Comparison of clinical characteristics and prognostic factors in two site-specific categories of ampullary cancer.
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