Like all other types of cancer, breast cancer (BC) is perceived as a life-threatening disease; it remains as a most frightening disease for women despite the important developments in its treatment. Moreover, BC is perceived as a disease that threatens both life and womanhood, includes physical, psychological, sexual and working-life problems, has recovery and exacerbation periods, and causes short-and long-period adjustment disorders (1, 2). According to the 2018 report of the International Agency for Research on Cancer, BC is ranked as the second most frequent cancer (11.6%) in the world. (3) According to the 2015 data of Ministry of Health in Turkey, BC is ranked first among the first 10 types of cancer seen in women and its incidence is 52.5 in one hundred thousand (4). While the incidence of breast cancer is increasing in both our country and the world, knowing what breast cancer means for patients may be beneficial for reducing the mortality and morbidity of the disease. Illness is subjective; each person experiences it differently. Therefore, individual responses to illness are also different (5). The responses attributed to illness, beliefs about its course and duration, its perceived consequences, and special beliefs about it all affect the treatment and controllability of disease (6). How the experience of cancer is defined and perceived plays a crucial role in adjusting both to the disease and its treatment (7). Therefore, attention has been increasingly directed on the meaning attributed by patients to their cancer. Studies show that how the patients with BC perceive their illness is an important factor that determines adjustment to disease, the general distress level, psychosocial distress experienced by patients, and coping with stress (1, 8-10).