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SUMMARY OBJECTIVE: This study purposed to evaluate preoperative two tumor markers, namely, carcinoembryonic antigen and carbohydrate antigen (CA)19-9, in colorectal cancer for anatomotopographic location with disease stage and to assess their utility for diagnostic staging purposes. METHODS: The study retrospectively incorporated patients who had undergone surgery for colorectal cancer at our department in 2015–2018 and in whom carcinoembryonic antigen and CA19-9 tumor markers had been preoperatively analyzed. The obtained data were then statistically processed using R-project. RESULTS: A total of 155 patients had been incorporated, of whom 96 (62%) were men and 59 (38%) were women. Rectum was the most common location (74 patients, 48%), and the least represented stage was IV (18, 12%). The marker carcinoembryonic antigen was obtained in all 155 cases, while CA19-9 was in 105. The median carcinoembryonic antigen was 3 (0.34–1104.25), and the median CA19-9 was 12 (0.18–840.00). A significance was recognized between median carcinoembryonic antigen and disease stage (p-value=0.016), with stages I, II, and III (medians 2, 3, and 2) different from stage IV (median 13), while no significance for CA19-9 was recognized (p-value=0.343). No significance between either marker and location (carcinoembryonic antigen: p=0.276; CA19-9: p=0.505) was detected. The testing was performed at a significance level of alpha=0.05. CONCLUSION: This study revealed a significance between the marker carcinoembryonic antigen, but not CA19-9, and the disease stage, while no relationship of either of these markers with tumor location was found. Herewith, the study confirmed that higher carcinoembryonic antigen values may suggest the finding of more advanced forms of colorectal cancer and thus a worse prognosis of this malignant phenomenon. OBJECTIVE namely CA199, CA199 CA 19 9, 9 (CA)19-9 purposes METHODS 20152018 2015 2018 2015–201 CA19 CA19- analyzed Rproject. Rproject R project. project R-project RESULTS 15 62% 62 (62% 5 38% 38 (38% women 74 (7 48%, 48 48% , 48%) 18, 18 (18 12%. 12% . 12%) cases 105 0.34–1104.25, 034110425 0.34–1104.25 0 34 1104 25 (0.34–1104.25) 1 0.18–840.00. 01884000 0.18–840.00 840 00 (0.18–840.00) pvalue=0.016, pvalue0016 pvalue p value=0.016 value 016 (p-value=0.016) I II medians 2 13, 13 13) pvalue=0.343. pvalue0343 value=0.343 343 (p-value=0.343) p=0.276 p0276 276 p=0.505 p0505 505 detected alpha005 alpha 05 alpha=0.05 CONCLUSION found Herewith phenomenon (CA)19- 2015201 201 2015–20 CA1 6 (62 (38 7 ( 4 (1 10 03411042 0.34–1104.2 110 (0.34–1104.25 0188400 0.18–840.0 84 (0.18–840.00 pvalue=0.016 pvalue001 value0016 value=0.01 01 (p-value=0.016 pvalue=0.343 pvalue034 value0343 value=0.34 (p-value=0.343 p=0.27 p027 27 p=0.50 p050 50 alpha00 alpha=0.0 (CA)19 201520 20 2015–2 (6 (3 0341104 0.34–1104. 11 (0.34–1104.2 018840 0.18–840. 8 (0.18–840.0 pvalue=0.01 pvalue00 value001 value=0.0 (p-value=0.01 pvalue=0.34 pvalue03 value034 value=0.3 (p-value=0.34 p=0.2 p02 p=0.5 p05 alpha0 alpha=0. (CA)1 20152 2015– 034110 0.34–1104 (0.34–1104. 01884 0.18–840 (0.18–840. pvalue=0.0 pvalue0 value00 value=0. (p-value=0.0 pvalue=0.3 value03 (p-value=0.3 p=0. p0 alpha=0 (CA) 03411 0.34–110 (0.34–1104 0188 0.18–84 (0.18–840 pvalue=0. value0 value=0 (p-value=0. p=0 alpha= (CA 0341 0.34–11 (0.34–110 018 0.18–8 (0.18–84 pvalue=0 value= (p-value=0 p= 034 0.34–1 (0.34–11 0.18– (0.18–8 pvalue= (p-value= 03 0.34– (0.34–1 0.18 (0.18– (p-value 0.34 (0.34– 0.1 (0.18 0.3 (0.34 0. (0.1 (0.3 (0. (0