Abstract
Background: Studying microvessel density (MVD) as an angiogenesis indicator enhances insights into tumor diversity, predicting invasive or metastatic tendencies. It assists in tailoring treatment approaches based on angiogenesis expression in different tumors. Objectives: This study aimed at assessing MVD using the CD31 marker and its associated factors in individuals with endometrial malignancies. Methods: This cross-sectional study involved 118 patients with endometrial cancer (EC) at Imam Hussein Educational and Medical Center, Tehran, Iran spanning from 2018 to 2023. Data, gathered from patient medical files using a researcher-made checklist, included a quantitative assessment of angiogenesis using the CD31 endothelial marker for MVD. Linear regression models were utilized to identify predictors of MVD-CD31 in patients with EC. Results: Patients had a mean age of 57.35 ± 11.16 years. The overall mean MVD-CD31 was 157.06 ± 94.31 (range, 32 - 385). Those with over 50% invasion depth exhibited a higher MVD-CD31 (79.59 units) compared to those with no invasion depth (P = 0.003). Higher MVD-CD31 levels were also associated with lymph node involvement and metastasis to other organs (P < 0.001). In comparison to grade 1 tumors, grade 2 tumors showed elevated MVD-CD31 (mean difference: 64.85, P = 0.007). Clear cell carcinoma tumor type had significantly higher MVD-CD31 than low-grade endometrioid carcinoma (mean difference: 225.84, P = 0.005). Conclusions: Our results suggest that some tumor characteristics such as invasion depth, lymph node involvement, tumor grade, and tumor type may play a role in angiogenesis in patients with EC. These findings suggest that tumor features play a crucial role in modulating angiogenesis in EC.
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