The Prognostic Utility of the Metastatic Lymph Node Ratio and the Number of Regional Lymph Nodes Removed from Patients with Small Bowel Adenocarcinomas

Background and Objectives: Small bowel adenocarcinomas (SBAs) are rare tumors of the gastrointestinal system. Lymph node metastasis in patients with curatively resected SBAs is associated with poor prognosis. In this study, we determined the prognostic utility of the number of removed lymph nodes an...

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Published in:Medicina (Kaunas, Lithuania) Lithuania), 2023-08, Vol.59 (8), p.1472
Main Authors: Aydin, Dincer, Kefeli, Umut, Ozcelik, Melike, Erdem, Gokmen Umut, Sendur, Mehmet Ali, Yildirim, Mahmut Emre, Oven, Basak Bala, Bilici, Ahmet, Gumus, Mahmut
Format: Article
Language:English
Subjects:
Analysis
Cancer
Classification
Colorectal cancer
Dissection
Gastrointestinal system
lymph node metastasis
Lymphatic system
Medical prognosis
Metastasis
metastatic lymph node ratio
Prognosis
small bowel adenocarcinoma
Small intestine
Tumors
Yard waste
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Summary:Background and Objectives: Small bowel adenocarcinomas (SBAs) are rare tumors of the gastrointestinal system. Lymph node metastasis in patients with curatively resected SBAs is associated with poor prognosis. In this study, we determined the prognostic utility of the number of removed lymph nodes and the metastatic lymph node ratio (the N ratio). Materials and Methods: The data of 97 patients who underwent curative SBA resection in nine hospitals of Turkey were retrospectively evaluated. Univariate and multivariate analyses of potentially prognostic factors including the N ratio and the numbers of regional lymph nodes removed were evaluated. Results: Univariate analysis showed that perineural and vascular invasion, metastatic lymph nodes, advanced TNM stage, and a high N ratio were significant predictors of poor survival. Multivariate analysis revealed that the N ratio was a significant independent predictor of disease-specific survival (DSS). The group with the lowest N ratio exhibited the longest disease-free survival (DFS) and DSS; these decreased significantly as the N ratio increased (both, p < 0.001). There was no significant difference in either DFS or DSS between groups with low and high numbers of dissected lymph nodes (i.e.,
ISSN:1648-9144
1010-660X
1648-9144
DOI:10.3390/medicina59081472