Colorectal cancer is the most common malignant neoplasm of the digestive tract. It affects part or the entire circumference of the intestinal wall. It is the second leading cause of mortality in Croatia. According to epidemiological data from 2020. 32 men and 22 women died in Zadar County. The average incidence is 50-60 per 100,000 people per year. After the age of 40, the risk of developing colorectal cancer increases significantly, and most cancers (90%) are detected in people over 70 years of age. Carcinomas are usually asymptomatic until the stage of advanced disease. Fresh blood may appear in the stool, although occult bleeding is more common, causing sideropenic anemia due to increased iron loss. The gradual growth of the tumor sometimes leads to symptoms such as constipation, obstruction of the large intestine, changes in bowel habits, and in advanced disease it causes ileus with miserere, vomiting of fecal contents. The Dukes classification and the TNM classification, which show the degree of extension of colon cancer, are most often used. The importance of the screening program refers to the testing of people without symptoms in order to detect a potential disease at the very beginning. The emphasis is on early detection of colorectal cancer because the results of treatment will be more successful. The diagnosis is confirmed by colonoscopy or biopsy. Colorectal cancer is treated multidisciplinary, and the method of treatment depends on the location, spread of the cancer and its size. The first choice of therapy is surgical treatment, followed by chemotherapy and/or radiation. Postoperative health care of patients is focused on eliminating physical symptoms (pain, nausea, vomiting), detecting and preventing postoperative complications (thromboembolism, bleeding, pneumonia), educating patients and their families. Special attention is paid to stoma care, nutrition and return to daily life activities. A bachelor's degree in nursing, with the help of knowledge, skills, experience and a holistic approach, helps the patient in the course of treatment and recovery.