Background: Art, as a product of human behavior, is the expression of emotions from inner states and may provide catharsis, purification, and release. Several branches of art, most notably music, dance, and painting, can be used for treatment purposes, especially in the case of psychological disorders. Cancer, which is defined as uncontrolled cell growth, has been an important health issue throughout history, but the recent increase in its frequency has made it one of the most significant public health problems. Both the physiological distress the disease subjects the body to and the accompanying emotional distress are important factors to be considered in cancer treatment. Aims: In this study, the role of art in expressing emotions of oncological patients was investigated. Materials and Methods: During the treatment period, patients were interviewed about their experiences, feelings, expectations and perceptions. The picture was used as an expression of emotions. Results: Communication between the patient and doctor is one of the most important elements in the treatment process, and it has come to the fore in branches of medicine, such as oncology, because of its positive contribution to treatment compliance. In general, the study showed a pronounced positivity and expectations on the part of patients from the hope-life-healing process rather than oncological treatment. Conclusion: In this study, we aim to demonstrate how the artistic expression of emotions, in particular, through painting, has a positive effect on healing, hope, and the interactions between cancer patients under oncological treatment and medical professionals.