Clinicopathological features and prognostic significance of site-specific metastasis in gastric cancer: a population-based, propensity score-matched analysis

作者：Xingbiao Huang, Zhe Li, Qiuyan Weng · 发表于：Discover Oncology · 年份：2025 · DOI：10.1007/s12672-025-02865-w · 被引用次数：7 · 研究领域：Gastric Cancer Management and Outcomes、Metastasis and carcinoma case studies、Cancer Cells and Metastasis

OBJECTIVE: Distant metastasis complicates gastric cancer management and worsens patient outcomes. Understanding the clinicopathological characteristics and prognostic impact of site-specific metastases is crucial for improving treatment strategies and survival prediction. METHODS: Data from 8338 metastatic gastric cancer patients (2010-2015) were retrieved from the SEER database. Patients were categorized by metastatic organ involvement. Chi-square tests analyzed clinicopathological differences. Cancer-specific survival (CSS) was assessed using Kaplan-Meier curves and the log-rank test. Independent prognostic factors were identified through Cox regression analysis. Propensity score matching minimized group heterogeneity. RESULTS: The liver was the most common metastatic site (43.20%). Patients with bone, brain, or lung metastases had significantly shorter CSS compared to those without these metastases. CSS differences between liver metastasis and non-metastasis were not significant. Propensity score matching confirmed shorter CSS in patients with bone and lung metastases. Single-site metastasis had a better prognosis than multiple-site metastasis, with liver-only metastasis showing the best survival and bone-only metastasis the worst. Multivariate Cox regression identified bone, brain, and lung metastases, age, histology, tumor grade, T stage, N stage, primary tumor resection, and chemotherapy as independent prognostic factors. CONCLUSIONS: The metastatic site significantly i...