Carcinoembryonic antigen and matrix metalloproteinase 2 serum and peritoneal washes concentration in staging and prognosis in colorectal cancer patients
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Purpose: The aim of the study was to determine the significance of carcinoembryonic antigen and matrix metalloproteinase 2 peritoneal washes and serum concentration in patients suffering from colorectal cancer concerning tumor staging and 5-year survival rate in these patients. Methods: 80 patients who underwent curative surgery for colorectal cancer were included in the study. Preoperative serum and intraoperative peritoneal washes CEA and MMP-2 concentrations were measured. Results: Regarding tumor penetration, CEA-s and CEA-p concentrations were higher in subsequent stages from T2 to T4. Both CEA-s and CEA-p concentrations were lower in T2 compared to T3 and T4. Significant difference of CEA-s and CEA-p was noted between T2 and T4 stages. MMP-2-s concentration was higher in T3 compared to T2, the highest MMP-2-p concentration was in T4, with no statistical significance. Regarding nodular status, a significant difference of CEA-s was noted between N0 and N1. For CEA-p, significance was found between N0 and N2 as between N1 and N2. MMP-2-s concentration was the highest in N1, MMP-2-p concentration was the highest in T4, with no statistical significance. The 5-year survival rate for all patients was 63.53%. There were significant differences in CEA-s and CEA-p concentrations between patients with negative and positive 5-year survival. Conclusion: Intraoperative peritoneal washes concentration of CEA may potentially serve as an important factor for more precise colorectal cancer staging. CEA-p and CEA-s concentrations correlate with survival rate in patients suffering from colorectal cancer and can be useful as an additional prognostic factor. The usefulness of MMP-2 measurement still requires further studies.
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