Relevance of lymph node XXXX along the superior mesenteric vein in @entity356 .

@entity1 @entity5 @entity356 @entity3
BACKGROUND: The purpose of this study was to evaluate the prognostic value of lymph node @entity3 along the superior mesenteric vein (station 14v) to determine the need for 14v dissection in @entity356 surgery. METHODS: A total of 1104 @entity1 with @entity356 who underwent gastrectomy including 14v dissection were enrolled. @entity1 were categorized into two groups: those with and those without 14v lymph node involvement by @entity3 . RESULTS: Of the total study population, 73 @entity1 (6  6 per cent) had 14v-positive @entity356 . These @entity1 were more likely to have advanced @entity5 ( @entity5 ), node (N) and distant metastatic (M) status, and histologically undifferentiated @entity356 . The 3- and 5-year survival rates of @entity1 with 14v-positive disease were 24 and 9 per cent respectively. Survival in this group was similar to that of @entity1 who had @entity356 with distant @entity3 (M1). Multivariable analysis demonstrated that 14v status was a significant prognostic factor for @entity356 (hazard ratio 2  13; P < 0  001). After histologically complete (R0) resection, the overall survival of 14v-positive @entity1 with any stage of @entity5 was significantly worse than that for 14v-negative @entity1 with stage IV @entity5 (P = 0  006). CONCLUSION: 14v status is an independent prognostic factor for @entity356 , with 14v-positive @entity356 having a poor prognosis, similar to that of M1 disease. The exclusion of 14v in regional lymph node dissection should be considered.
