“Factors Associated with Mediastinal Lymph Node Positivity in Proximal Gastric Tumor Patients Undergoing Curative Surgery”

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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Background

Gastric cancer is the fifth most common cancer worldwide.

Objectives

This study investigated the risk factors associated with mediastinal lymph node metastases due to proximal gastric cancer.

Methods

The study included patients with curative surgical resection and transcural lymphadenectomy for proximal gastric tumors between January 2012 and January 2020. The patients (n=88) were divided into Group 1 (n=54, negative) and Group 2 (n=34, positive) according to the positivity of mediastinal lymph nodes. The diagnostic value of composite immunonutritional and inflammatory indices in predicting lymph node positivity was examined.

Results

It was found that only C-reactive protein (CRP) (P=0.044), the rate of postoperative respiratory complications (P=0.002), tumor size (P=0.0001), the total number of lymph nodes, and the number of metastatic lymph nodes were higher in Group 2. Moreover, pT stage (P=0.008) and pN stage (P<0.001) were more advanced in Group 2. Among the composite indices, only the neutrophil-to-lymphocyte ratio (NLR) had a diagnostic value, with a sensitivity of 67.65% and a specificity of 55.56% at a cut-off point of > 2.19. According to the multivariate analysis, a tumor size of > 3 cm, a CRP value of > 7, and tumor localization were independent risk factors.

Conclusion

Our study found that mediastinal lymph node positivity was associated with elevated CRP and that these patients had more advanced tumors and poor histopathological characteristics. Mediastinal lymph node positivity was also associated with increased postoperative respiratory complications. We established the diagnostic value of the NLR in predicting lymph node positivity. It is helpful to establish the relationship between clinicopathological characteristics and mediastinal lymph node positivity in proximal gastric tumors since it can be useful in determining the surgical strategy for esophagogastric junction tumors.

Language:
English
Published:
Iranian Red Crescent Medical Journal, Volume:25 Issue: 11, Nov 2023
Page:
2688
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