The quality of life of patients with malignant disease The goal of the research: To examine the quality of life of patients with malignant disease, treated at the General hospital Nova Gradiška. Study draft: Cross-sectional study. Subjects and methods: A total of 116 subject participated in the study, 58 of whom were male and 58 were female. The age of the subjects ranged from 30 to 71. For the purpose of this study, the EORTC QLQ-C30 version 3.0 questionnaire was used to assess the quality of life. The results: A higher level of quality of life was noticed in respondents aged 31 to 50 with regard to physical functioning in contrast to respondents of older age. Furthermore, it was noticed that men showed less difficulty in emotional functioning in contrast to women. Moreover, a higher level of quality of life was noticed among the respondents with higher education compared to respondents who are not educated or have only completed primary school and also among the employed / unemployed respondents in comparison to pensioners. It was also noticed that most respondents feel pain which is a limiting factor in the lives of most respondents. Conclusion: The quality of life of people suffering from malignant disease is not affected by the duration of malignant disease nor marital status, but it has been noticed that the quality of life of people with malignancy is greatly affected by age, gender, education, work status, but mostly the presence of pain.