82 patients, who had been diagnosed with colo-rectal adenocarcinoma in our department between 2007 and 2014, were included in our study. Additionally, 31 patients with colo-rectal polyps (20 conventional adenomatous polyps and 11 malignant colo-rectal polyps) were also included in this study. The patients with colo-rectal adenocarcinoma were reevaluated in terms of gender, age, topography of recto-colic tumor, TNM stadialization, vasculo-lymphatic invasion, lymph nodes metastases and distant metastases. The study of CD8, Ki67, p53, CDX2 and D2-40 immunoexpression in colo-rectal cancer patients revealed: an elevated positivity index in patients with pT2 and pT3 stages and in patients with lymph node metastases in case of the CD8; an elevated positivity index in patients with pT2, pT3 and pT4 stage in case of Ki67; an elevated positivity index in patients with pT4 stage in in case of the p53; an increased positivity index in the pT2, pT3 stage, the absence of vasculo-lymphatic invasion, the absence of lymph node and distant metastases in case of the CDX2 and an increased positivity index in patients with the pT2, pT3 stage, the abscence of lymph node and distant metastases in case of the D2-40 Tumoral staging (pT2, pT3 and pT4) has been shown to be correlated with immunoexpression of the following markers: CD8, CDX2 and p53.
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