Abstract
Objective
Endocan and vascular endothelial growth factor (VEGF) are markers expressed in various cancer types that are highly vascular, and they have prognostic significance for these cancers. In this study, we aimed to show the expression of endocan and VEGF in pheochromocytoma tumor tissues and to evaluate their correlations with histopathological parameters.
Material and methods
Thirty-eight patients who had been operated for pheochromocytoma were included in the study. As the control group, 28 subjects whose specimens contained normal adrenal medulla tissue were included. The formalin-fixed paraffin-embedded specimens of pheochromocytoma patients were evaluated for Pheochromocytoma of the Adrenal gland Scaled Score (PASS). Sections were then stained for immunohistochemical analysis. The degree of endocan and VEGF positivity was determined by the proportion of stained cells on a negative to strong scale.
Results
Endocan (p < 0.001) and VEGF (p = 0.004) expressions were found to be significantly higher in the pheochromocytoma group than in the control group. In the pheochromocytoma group, total PASS score (r = 0.714; p < 0.001) and most of the PASS score components were positively correlated with the level of endocan expression. Median Ki-67 index (p = 0.010), total PASS score (p < 0.001), tumor cell spindling (p = 0.048), and nuclear pleomorphism (p = 0.030) were higher in pheochromocytoma with VEGF expression than in those without.
Conclusion
If our findings are supported by studies with a larger sample size, we think that endocan has the potential to be used both as a tumor marker and in predicting malignancy potential in patients with pheochromocytoma, and that the detection of VEGF expression in these tumors is also associated with an increase in malignancy potential.
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This work was supported by the Scientific Research Fund of Necmettin Erbakan University.
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The Ethics Committee of the Necmettin Erbakan University (NEU) Meram Medical Faculty approved the study (decision no: 2020/2504 and date: 22.05.2020).
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Kocabaş, M., Can, M., Karaköse, M. et al. Expression of endocan and vascular endothelial growth factor and their correlation with histopathological prognostic parameters in pheochromocytoma. Endocrine 82, 638–645 (2023). https://doi.org/10.1007/s12020-023-03489-2
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DOI: https://doi.org/10.1007/s12020-023-03489-2