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  • Title: CA 125 and vascular endothelial growth factor in the differential diagnosis of epithelial ovarian tumors.
    Author: Candido Dos Reis F, Moreira de Andrade J, Bighetti S.
    Journal: Gynecol Obstet Invest; 2002; 54(3):132-6. PubMed ID: 12571433.
    Abstract:
    Tumor markers have been investigated in differentiation of benign and malignant tumors. We analyzed CA 125 and vascular endothelial growth factor (VEGF) levels in serum and cyst fluid in patients with epithelial ovarian tumors. Serum and tumor cyst fluid of 50 patients with ovarian epithelial tumors (7 malignant, 3 bordeline and 40 benign) were assayed for VEGF by ELISA and CA 125 levels by chemoluminescence. CA 125 serum levels were significantly higher in patients with malignant and borderline tumors than in patients with benign cysts (p = 0.0005). CA 125 cyst fluid contents were comparable for malignant, borderline and benign ovarian tumors (p = 0.39). Significantly higher levels of VEGF were present in cyst fluid for malignant and borderline tumors compared with benign cysts (p < 0.0001); however, serum levels of VEGF were similar among all patients (p = 0.25). The CA 125 serum levels correlated with matched VEGF cyst fluid levels (r = 0.44, p = 0.0015). Serum CA 125 and cystic VEGF were good methods to differentiate benign and malignant epithelial ovarian tumors. Patients with elevated intracystic VEGF levels presented significantly higher CA 125 serum levels, although the CA 125 intracystic content overlapped. The angiogenesis and enhancement of vascular permeability induced by VEGF represents a new hypothesis for the release of the CA 125 antigen into the circulation in patients with ovarian epithelial neoplasm.
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