Standardized staging of tumors takes into account the depth of invasion of the intestinal wall and the presence of local or distant metastases, specifically focusing to precisely estimate length of patient survival. This assessment system does not fully reflect the biological behaviour of cancer individually, ie. tumor aggressiveness and ability of recurrence tumor after medical treatment. Futuremore, cancer at some patients have more aggressive growth than other carcinomas in the same clinical stage, because there are other parameters that determine the biological behaviors of colon cancer, which are not included in the standard classification of determining tumor stage. One of the recent arguments which are due in the spotlight is "tumor budding", which represents one cell or group of up to five non-differentiated tumor cells, which are found in the stroma out of the invasive front line of cancer. There are 92 colon cancer and upper rectum processed, which are collected at General Hospital in Trebinje and Medical Center in Kosovska Mitrovica. The aim is to determine whether there is a correlation between the number of tumor budding and stage of tumors in colorectal cancer. The tumor stage is determined by Astler Coller classification. Investigation, based on χ2-test, leads to the conclusion that there is not a statistical significance in tumor budding distribution in relation to tumor stage according to the Astler Coller classification (p = 0.383; p> 0.05).

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