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  • Title: Clinico-pathological characteristics and prognostic factors of gastrointestinal stromal tumors among a Chinese population.
    Author: Li J, Zhang H, Chen Z, Su K.
    Journal: Int J Clin Exp Pathol; 2015; 8(12):15969-76. PubMed ID: 26884871.
    Abstract:
    Gastrointestinal stromal tumors (GISTs) are the most common primary mesenchymal tumors of the digestive tract. GISTs include a group of heterogeneous tumors with different morphology, biologic behavior, and genetic characteristics, so their epidemiology, clinico-pathological features and prognosis is distinct in different countries. The objective of this study is to analyze clinico-pathological characteristics and prognostic factors of GISTs among Chinese population. We investigated 112 GIST patients were diagnosed between July 2008 and January 2013 at the First Affiliated Hospital of Guangxi Medical University. Histologic evaluation and immunohistochemistry analysis was performed on paraffin-embedded tissue from the 112 GISTs. Overall survival analysis was carried out using the Kaplan-Meier method and the log-rank test. Multivariate analysis was performed according to Cox's proportional hazards model. Three and 5-year OS rates were 71.4 and 58.6% respectively. Univariate analysis showed that the following factors were significant in predicting OS: tumor site, tumor size, metastasis, resection margin status, cell type, invasion of adjacent organ, invasion of smooth muscle, mitotic rate, P53 and adjuvant therapy with imatinib (P<0.05). Multivariate analysis showed that tumor size, metastasis, resection margin status, mitotic rate, P53 and adjuvant therapy with imatinib were independent prognostic factors associated with OS. This may aid in the prediction of clinical evolution and guide treatments in patients with GIST in China.
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