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Lymph Node Examination and Patterns of Nodal Metastasis Among Patients with Left- Versus Right-Sided Intrahepatic Cholangiocarcinoma After Major Curative-Intent Resection

  • Hepatobiliary Tumors
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Background

We sought to investigate whether the unique lateral patterns of lymphatic drainage impacted lymphadenectomy (LND), lymph node metastasis (LNM), and long-term survival of patients after curative hemi-hepatectomy for left- versus right-sided intrahepatic cholangiocarcinoma (ICC).

Methods

Data on patients who underwent curative hemi-hepatectomy for left- or right-sided ICC were collected from 15 high-volume centers worldwide, as well as from the Surveillance, Epidemiology, and End Results (SEER) registry. Primary outcomes included overall survival (OS) and disease-free survival (DFS).

Results

Among 697 patients identified from the multi-institutional database, patients who underwent hemi-hepatectomy for left-sided ICC (n = 363, 52.1%) were more likely to have an increased number of LND versus patients with right-sided ICC (n = 334, 47.9%) (median, left 5 versus right 3, p = 0.012), although the frequency (left 66.4% versus right 63.8%, p = 0.469) and station (beyond station no. 12, left 25.3% versus right 21.1%, p = 0.293) were similar. Consequently, left-sided ICC was associated with higher incidence of LNM (left 33.3% versus right 25.7%, p = 0.036), whereas the station and number of LNM were not different (both p > 0.1). There was no difference in OS (median, left 34.9 versus right 29.6 months, p = 0.130) or DFS (median, left 14.5 versus right 15.2 months, p = 0.771) among patients who underwent hemi-hepatectomy for left- versus right-sided ICC, which were also verified in the SEER dataset. LNM beyond station no. 12 was associated with even worse long-term survival versus LNM within station no. 12 among patients with either left- or right-sided ICC after curative-intent resection (all p < 0.05).

Conclusions

The unique lateral patterns of lymphatic drainage were closely related to utilization of LND, as well as LNM of left- versus right-sided ICC.

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Correspondence to Yi Lv MD, PhD or Timothy M. Pawlik MD, PhD, MPH, MTS, MBA, FACS, FRACS (Hon.).

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10434_2022_12797_MOESM1_ESM.tif

Supplementary file1 (Supplementary Figure 1: The overall (a) and disease-free survival (b) of patients who underwent curative hemi-hepatectomy and adequate LND (≥6) for left- versus right-sided intrahepatic cholangiocarcinoma) (TIF 364 KB)

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Zhang, XF., Xue, F., Weiss, M. et al. Lymph Node Examination and Patterns of Nodal Metastasis Among Patients with Left- Versus Right-Sided Intrahepatic Cholangiocarcinoma After Major Curative-Intent Resection. Ann Surg Oncol 30, 1424–1433 (2023). https://doi.org/10.1245/s10434-022-12797-2

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