BACKGROUND: The prognostic factors for duodenal carcinoma (DC) remain unclear because of its rarity. This study aimed to investigate the prognostic impact of pancreatic invasion (PI) on postoperative survival for patients with DC. METHODS: This study retrospectively analyzed 86 patients with DC, including 18 patients with PI, who underwent surgical resection between October 2002 and March 2018. The clinicopathologic features and survival outcomes of these patients were investigated to identify the prognostic factors in DC. The long-term survival for the DC patients with PI was compared with that for the patients who underwent resection for resectable pancreatic head carcinoma (RPHC) during the same period. RESULTS: The median survival time (MST) for the DC patients with PI was 25.7 months, which was significantly worse than for the patients with T2 or deeper DC without PI (p = 0.010). The multivariate analysis showed that the independent prognostic factors were PI (hazard ratio [HR] 7.59; p = 0.019) and lymph node metastasis (LNM) (HR 5.01; p = 0.026). The MST for the DC patients with PI did not differ significantly from that for the RPHC patients treated without adjuvant chemotherapy (p = 0.135). Comparable rates of microscopic venous invasion and hematogenous metastasis were observed for the DC patients with PI and the RPHC patients. CONCLUSIONS: Pancreatic invasion was an independent prognostic factor in DC. The survival outcomes for the DC patients with PI did not differ from those for the patients with RPHC, which was associated with a high rate of hematogenous recurrence.
BACKGROUND: The prognostic factors for duodenal carcinoma (DC) remain unclear because of its rarity. This study aimed to investigate the prognostic impact of pancreatic invasion (PI) on postoperative survival for patients with DC. METHODS: This study retrospectively analyzed 86 patients with DC, including 18 patients with PI, who underwent surgical resection between October 2002 and March 2018. The clinicopathologic features and survival outcomes of these patients were investigated to identify the prognostic factors in DC. The long-term survival for the DC patients with PI was compared with that for the patients who underwent resection for resectable pancreatic head carcinoma (RPHC) during the same period. RESULTS: The median survival time (MST) for the DC patients with PI was 25.7 months, which was significantly worse than for the patients with T2 or deeper DC without PI (p = 0.010). The multivariate analysis showed that the independent prognostic factors were PI (hazard ratio [HR] 7.59; p = 0.019) and lymph node metastasis (LNM) (HR 5.01; p = 0.026). The MST for the DC patients with PI did not differ significantly from that for the RPHC patients treated without adjuvant chemotherapy (p = 0.135). Comparable rates of microscopic venous invasion and hematogenous metastasis were observed for the DC patients with PI and the RPHC patients. CONCLUSIONS:Pancreatic invasion was an independent prognostic factor in DC. The survival outcomes for the DC patients with PI did not differ from those for the patients with RPHC, which was associated with a high rate of hematogenous recurrence.
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