The prognostic effect of VEGF expression in squamous cell carcinoma of the cervix treated with radiation therapy alone.

We investigated the relationship between vascular endothelial growth factor (VEGF) expression and clinical outcome in squamous cell carcinoma of the cervix treated with radiotherapy alone. The immunohistochemical study was performed for forty-two paraffin embedded specimens with anti-VEGF mouse monoclonal antibody. Staining was defined as positive for VEGF when more than 10% of the tumor cells were stained from 500 cells counted. Positive VEGF expression was observed in twenty-one among forty-two patients. VEGF expression according to stage (p=0.101), lymph node status (p=0.621), parametrial invasion (p=0.268), and age (p=0.5) revealed no significant difference. But the VEGF expression was significantly higher in tumors larger than 4 cm (p=0.031). Five year survival rates according to VEGF expression status were 89% for VEGF negative group and 47% for VEGF positive group (p=0.02). FIGO stage (p=0.007), tumor size (p=0.025) and the duration of external beam radiation therapy (p=0.006) were also significant prognostic factors for overall survival. We suggest that VEGF expression may be a prognotic factor of the cervix cancer patients treated with radiation therapy alone.