Abstract
Background
We examined whether the incidental cystic duct nodal status predicts the status of the hepatoduodenal ligament (D1) or common hepatic artery, the pancreaticoduodenal and paraaortic lymph nodes (D2), and the overall prognosis and thus indicates whether an oncologic extended resection (OER) is required.
Methods
The study included patients who underwent OER for incidental gallbladder cancer (IGBC) during 1999–2015. Associations between a positive cystic duct node and D2 nodal status and disease-specific survival (DSS) were analyzed.
Results
One-hundred-eight-seven patients were included. Seventy-three patients (39%) had the incidental cystic duct node retrieved. Cystic duct node positivity was associated with positive D1 (odds ratio 5.2, p = 0.012) but not with D2. Among all patients, a positive cystic duct node was associated with worse DSS (hazard ratio [HR] 2.09). Patients without residual cancer at OER and positive incidental cystic duct node had similar DSS to patients with negative nodes 70 vs 60% (p = 0.337). Positive D1 (HR 6.07) or positive D2 (HR 13.8) was predictive of worse DSS.
Conclusions
Patients with no residual cancer at OER and regional disease limited to their incidental cystic duct node have similar DSS to pN0 patients. The status of the cystic duct node only predicts the status of hepatic pedicle nodes.
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Acknowledgements
The University of Texas MD Anderson Cancer Center is supported in part by the NIH/NCI under award number P30CA016672.
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All authors meet the following criteria:
1. Substantial contributions to the conception or design of the work or the acquisition, analysis, or interpretation of data for the work.
Vega, Vinuela, Yamashita, Sanhueza, Cavada, Diaz, Aloia, Chun, Tzeng, Okuno, Goumard, Vauthey, Lee, and Conrad.
2. Drafting the work or revising it critically for important intellectual content.
Vega, Vinuela, Yamashita, Sanhueza, Cavada, Diaz, Aloia, Chun, Tzeng, Okuno, Goumard, Vauthey, Lee, and Conrad.
3. Final approval of the version to be published.
Vega, Vinuela, Yamashita, Sanhueza, Cavada, Diaz, Aloia, Chun, Tzeng, Okuno, Goumard, Vauthey, Lee, and Conrad.
4. Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Vega, Vinuela, Yamashita, Sanhueza, Cavada, Diaz, Aloia, Chun, Tzeng, Okuno, Goumard, Vauthey, Lee, and Conrad.
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This study was approved by the institutional review boards of both hospitals.
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The authors declare that they have no conflicts of interest.
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Oral presentation: 58th SSAT Annual Meeting 2017 in Chicago
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Vega, E.A., Vinuela, E., Yamashita, S. et al. Extended Lymphadenectomy Is Required for Incidental Gallbladder Cancer Independent of Cystic Duct Lymph Node Status. J Gastrointest Surg 22, 43–51 (2018). https://doi.org/10.1007/s11605-017-3507-x
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DOI: https://doi.org/10.1007/s11605-017-3507-x