Introduction. Focal carcinoma changes within liver are the most common complication considering patients with large intestine cancer. According to experts’ recommendations, regular USG and CT examinations are a chance for the early detection and application of proper treatment. Basic treatment methods are chemotherapy and conventional abdomen laparotomy. Radical and extensive surgical treatment is painful, stressful and significantly extends convalescence. The alternative treatment preceding extensive therapy is the newest radiofrequency thermal ablation method. Aim. The main objective of the research was to assess life quality of patients with focal tumor lesions in the liver before and after treatment of percutaneous radiofrequency ablation of the liver. Material and methods. The study on 31 patients was carried to prove validity and positive influence on life quality and health after radiofrequency thermal ablation. Patients were tested two weeks before and after treatment using WHOQOL-BREF and EORTC-QLQ C30 questionnaires. Despite the short period of time after ablation, patients’ health quality considerably improved according to both used testing tools. Conclusions. Percutaneous radiofrequency thermal ablation is a less invasive alternative for patients affected with carcinoma changes within the liver. Tests presented in this paper ought to be completed with additional variables which will provide precise information about the life quality issue and positive results of applied treatment.

Key words: focal carcinoma changes in the liver, percutaneous radiofrequency thermal ablation of the liver, life quality, large intestine carcinoma, radiofrequency thermalablation.