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Tumor angiogenesis in gallbladder carcinoma
Y Sugawara1, M Makuuchi, Y Harihara
1Second Department of Surgery, Faculty of Medicine, University of Tokyo, Japan. yasusuga-tky@umin.ac.jp
Hepato-Gastroenterology
|August 3, 1999
Summary
Tumor angiogenesis, assessed by microvessel count, was not an independent prognostic factor in gallbladder carcinoma. While linked to lymph node status, it did not significantly predict patient survival.
Area of Science:
- Oncology
- Cancer Research
- Pathology
Background:
- Neovascularization is crucial for tumor growth and metastasis.
- The prognostic significance of tumor angiogenesis in gallbladder carcinoma is largely unknown.
- Microvessel count correlates with clinical outcomes in some solid tumors.
Purpose of the Study:
- To investigate tumor angiogenesis as a prognostic factor in gallbladder carcinoma.
- To determine the relationship between microvessel count and patient survival.
- To assess the association of angiogenesis with clinicopathological features.
Main Methods:
- Immunohistochemical staining for CD34 to identify endothelial cells.
- Quantification of microvessel density in resected gallbladder carcinoma specimens.
- Statistical analysis including univariate and multivariate models.
Main Results:
- Univariate analysis showed a correlation between microvessel count and survival (p=0.04).
- Multivariate analysis indicated microvessel count is not an independent prognostic factor (p=0.256).
- Microvessel count correlated with lymph node status (p=0.044) but not tumor status or stage.
Conclusions:
- Neovascularization plays a minor role in gallbladder cancer progression.
- The contribution of angiogenesis to gallbladder cancer spread is limited, particularly in early stages.