Colon cancer is one of the most common carcinoma in humans. It occurs equally in women and men. Incidence is different parts of the world. It is higher in developed countries and lower in developing countries. This kind of carcinoma most commonly affects older persons. In Croatia, it is diagnosed on an annual basis in nearly 3 000 patients. Carcinoma occurs throughout the intestine, and most commonly in the proximal part. Colon cancer belongs to very malignant tumors, especially if it appears in a young person. The most common symptoms of colon cancer are abdominal pain, changes in consistency of the stol (changes in period of constipacion and diarrhea), and blood and mucous in the stool. Diagnosis of cancer begins with anamnesis and physical examination. The treatment is ,ainly surgicyl, depending on the localization and condition of the patient. Colostrum is a permanent or temporarily derived part of the colon on the abdominal wall. The word colostom comes from Greek and consists of two words - "colon" meaning colon and stoma, which means hole. The role of nurses in the care of patients with colostomy is of great importance. The patient and his family should be explained the importance of the surgical procedure and refer them on the changes that will occur after the operacion. After surgery, the patient must, as soon as possible, depending on his physical and mental abilities, accept and adopt procedures that will have to do for a lifetme. During the patient's stay in a hospital he should be introduced to the new situation. The quality of life of a patient dependes on how much he and his family have adopted procedures in te care of the stoma and have accepted the way of life with stoma. The most important thing a person with a solostomy needs to learn is that he still has to live a life as before the surgery and be an active and equal family member.