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| Content Provider | frontiers |
|---|---|
| Author | Wang, Xuan Wang, Zheng Pan, Junjie Lu, Zhou-Yi Xu, Dong Zhang, Hui-Jun Wang, Shao-Hua Huang, Da-Yu Chen, Xiao-Feng |
| Abstract | Lung cancer is the leading cause of cancer-related deaths mainly attributable to metastasis, especially extrathoracic metastasis. This large-cohort research is aimed to explore metastatic profiles in different histological types of lung cancer, as well as to assess clinicopathological and survival significance of diverse metastatic lesions. Lung cancer cases were extracted and enrolled from the Surveillance, Epidemiology and End Results (SEER) database. χ2 tests were conducted to make comparisons of metastatic distribution among different histological types and odds ratios were calculated to analyze co-occurrence relationships between different metastatic lesions. Kaplan-Meier methods were performed to analyze survival outcomes according to different metastatic sites and Cox regression models were conducted to identify independent prognostic factors. In total, we included 159,241 lung cancer cases with detailed metastatic status and complete follow-up information. In order to understand their metastatic patterns, we elucidated the following points in this research: (1) Comparing the frequencies of different metastatic lesions in different histological types. The frequency of bone metastasis was highest in adenocarcinoma, squamous cell carcinoma, LCLC and NSCLC/NOS, while liver was the most common metastatic site in SCLC. (2) Elaborating the tendency of combined metastases. Bi-site metastases occurred more common than tri-site and tetra-site metastases. And several metastatic sites, such as bone and liver, intended to co-metastasize preferentially. (3) Clarifying the prognostic significance of single-site and bi-site metastases. All single-site metastases were independent prognostic factors and co-metastases ended up with even worse survival outcomes. Thus, our findings would be beneficial for research design and clinical practice. |
| ISSN | 2234943X |
| DOI | 10.3389/fonc.2020.00715 |
| Volume Number | 10 |
| Journal | Frontiers in Oncology |
| Language | English |
| Publisher Date | 2020-05-19 |
| Access Restriction | Open |
| Subject Keyword | Lung cancer Histological type SEER Metastasis Survival |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cancer Research Oncology |
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