The prognostic significance of CD117-positive mast cells and microvessel density in colorectal cancer.
Medicine(2024)
摘要
The prognostic significance of angiogenesis has been demonstrated in various types of cancer. However, in colorectal cancer (CRC), there are conflicting results regarding the relationship between angiogenesis and clinical-histopathological prognostic factors. Mast cells are immune system cells found in the inflammatory microenvironment; their role in carcinogenesis and prognosis remains unclear although they are considered to cause cancer development and progression. The present study aims to evaluate the prognostic significance of mast cell accumulation and angiogenesis assessed by microvessel density (MVD) in patients with CRC. Patients who underwent curative resection and who were not treated with neoadjuvant chemotherapy were included. The anti-CD34 antibody and anti-CD117 antibody were utilized for the immunohistochemical assessment of MVD and the mast cell count (MCC) in the tissue samples, respectively. The relationship between MCC, MVD, survival and clinical-histopathological prognostic factors were evaluated. A total of 94 patients were enrolled to the study. In a median 49-month follow-up, 65 patients (69.1%) died. The 5-year disease-free survival was 61.1% and 31.3% for the group with CD34 < 18.3% and CD34 > 18.3%, respectively (P = .001). The same groups presented 5-year overall survival rates of 77, 1% and 51, 4%, respectively (P, .012). The MVD was found to be associated with the pathological T stage, lymph node metastasis and distant metastasis (P < .05). Although the MCC was positively correlated with MVD, there was no association between the MCC and clinical-histopathological prognostic factors. MVD-assessed angiogenesis was significantly related to survival and the clinical-histopathological prognostic factors in patients diagnosed with CRC.
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