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Erschienen in: Annals of Surgical Oncology 13/2021

09.07.2021 | Gastrointestinal Oncology

Prognostic Nomograms Based on Three Lymph Node Classification Systems for Resected Gastric Adenocarcinoma: A Large Population-Based Cohort Study and External Validation

verfasst von: Keying Che, MD, Yue Wang, MD, Nandie Wu, MD, Qin Liu, MD, Ju Yang, MD, Baorui Liu, MD, PhD, Jia Wei, MD, PhD

Erschienen in: Annals of Surgical Oncology | Ausgabe 13/2021

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Abstract

Backgrounds

The optimal lymph node classification system for prognostic assessment in gastric adenocarcinoma (GAC) patients who undergo lymph node dissection remains unclear. Therefore, this study aimed to compare prognostic nomograms based on AJCC N stage, lymph node ratio (LNR), and log odds of metastatic lymph nodes (LODDS) to evaluate the prognosis and differentiate risk subgroups of patients with resected GAC.

Patients and Methods

We collected 4633 patients with resected stage I–III GAC receiving chemotherapy from the Surveillance, Epidemiology, and End Results (SEER) database between 2004 and 2015. Independent prognostic factors were selected by Cox regression analyses, based on which nomograms were constructed. External validation was performed in 228 cases from Nanjing Drum Tower Hospital. Kaplan–Meier survival analysis was used to evaluate the effect of postoperative radiotherapy (PORT) for different lymph node classifications.

Results

Multivariate analysis indicated that age, grade, primary site, T stage, N stage, LNR, LODDS, and radiotherapy were independent predictors. Good discrimination power and high consistency of calibration plots were obtained from the LODDS system nomogram. The LODDS classification could more precisely differentiate risk subgroups and improve the discrimination of the resected GAC prognosis. A user-friendly webserver of LODDS system was built based on the nomogram for convenient clinical application.

Conclusions

The LODDS seems to be the most reliable lymph node classification in predicting the prognosis of patients with resected GAC and should be recommended in clinical prognostic assessment. Incorporating LODDS into the staging system will enable clinicians to more accurately predict prognosis and guide radiotherapy regimen decisions.
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Metadaten
Titel
Prognostic Nomograms Based on Three Lymph Node Classification Systems for Resected Gastric Adenocarcinoma: A Large Population-Based Cohort Study and External Validation
verfasst von
Keying Che, MD
Yue Wang, MD
Nandie Wu, MD
Qin Liu, MD
Ju Yang, MD
Baorui Liu, MD, PhD
Jia Wei, MD, PhD
Publikationsdatum
09.07.2021
Verlag
Springer International Publishing
Erschienen in
Annals of Surgical Oncology / Ausgabe 13/2021
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-021-10299-1

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