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  • Title: The effect of prophylactic thoracic duct ligation during esophagectomy on the incidence of chylothorax and survival of the patients: an updated review.
    Author: Liu L, Gong L, Zhang M, Wu W.
    Journal: Postgrad Med; 2021 Apr; 133(3):265-271. PubMed ID: 32729759.
    Abstract:
    BACKGROUND: The role of thoracic duct ligation (TDL) during esophagectomy remains controversial. This review aimed to elucidate the effect of TDL on chylothorax and survival of the patients after esophagectomy for cancer. METHODS: We searched articles from PubMed, Web of Science, Scopus, Cochrane, and Google Scholar till May 2020 according to the PRISMA guidelines using the terms of [Oesophagectomy OR esophagectomy] AND [chylothorax] AND [thoracic duct ligation]. Only those compared the incidence of chylothorax in patients who ligated or resected the thoracic duct (ligation group) or preserved the thoracic duct (preservation group) were selected. RESULTS: First, 15 studies including one randomized controlled trial were collected for meta-analysis regarding post-esophagectomy chylothorax. Of these, 3658 patients underwent TDL and 4638 cases preserved the thoracic duct. Both groups showed similar chylothorax rate (odd ratios 0.73 in favor of ligation group; 95% confidence interval [CI] 0.50-1.07, p = 0.11). Second, four studies providing survival information were included for another meta-analysis, and the patients in preservation group demonstrated better 5-year overall survival compared to those in ligation group (odds ratio 1.25; 95% CI 1.08-1.44, p = 0.002). CONCLUSIONS: The present review provided updated evidence opposing prophylactic TDL during esophagectomy for lowering chylothorax. Considering the harmful effect of TDL on survival of the patients, further well-designed trials should be considered in selected cases under strict supervision.
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