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  • Title: Prognostic value of lymph node metastases detected during surgical exploration for pancreatic or periampullary cancer: a systematic review and meta-analysis.
    Author: van Rijssen LB, Narwade P, van Huijgevoort NC, Tseng DS, van Santvoort HC, Molenaar IQ, van Laarhoven HW, van Eijck CH, Busch OR, Besselink MG, Dutch Pancreatic Cancer Group.
    Journal: HPB (Oxford); 2016 Jul; 18(7):559-66. PubMed ID: 27346135.
    Abstract:
    BACKGROUND: Hepatic-artery and para-aortic lymph node metastases (LNM) may be detected during surgical exploration for pancreatic (PDAC) or periampullary cancer. Some surgeons will continue the resection while others abort the exploration. METHODS: A systematic search was performed in PubMed, EMBASE and Cochrane Library for studies investigating survival in patients with intra-operatively detected hepatic-artery or para-aortic LNM. Survival was stratified for node positive (N1) disease. RESULTS: After screening 3088 studies, 13 studies with 2045 patients undergoing pancreatoduodenectomy were included. No study reported survival data after detection of LNM and aborted surgical exploration. In 110 patients with hepatic-artery LNM, median survival ranged between 7 and 17 months. Estimated pooled mean survival in 84 patients with hepatic-artery LNM was 15 [95%CI 12-18] months (13 months in PDAC), compared to 19 [16-22] months in 270 patients with N1-disease without hepatic-artery LNM (p = 0.020). In 192 patients with para-aortic LNM, median survival ranged between 5 and 32 months. Estimated pooled mean survival in 169 patients with para-aortic LNM was 13 [8-17] months (11 months in PDAC), compared to 17 (6-27) months in 506 patients with N1-disease without para-aortic LNM (p < 0.001). Data on the impact of (neo)adjuvant therapy on survival were lacking. CONCLUSION: Survival after pancreatoduodenectomy in patients with intra-operatively detected hepatic-artery and especially para-aortic LNM is inferior to patients undergoing pancreatoduodenectomy with other N1 disease. It remains unclear what the consequence of this should be since data on (neo-)adjuvant therapy and survival after aborted exploration are lacking.
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