Breast cancer is the second most common cause of death from malignant tumours in women. Breast cancer in its early stages does not cause symptoms, but when the disease is advanced, it causes numerous physical symptoms, but also interferes with psychological, social, family, sexual and spiritual functioning. Health-related quality of life is the most important aspect of everyone's life. Women diagnosed with breast cancer have a reduced quality of life, compared to the healthy population. The assessment of the quality of life of women with breast cancer, as a disease with long-term consequences, is extremely important, also for the success of anticancer and symptomatic treatment. Among the determinants of quality of life, four groups are mentioned: sociodemographic variables, clinical variables, psychosocial factors and health beliefs. The assessment of quality of life allows the selection of treatment that is beneficial to the patient, and the level of quality of life also has prognostic significance. Interventions to improve quality of life can increase the survival time of women with breast cancer.
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