The Symptom Burden in Breast Cancer Survivors

The aim of this study was to review the literature on quality of life among long-term survivors of breast cancer and identify the specific aspects of quality of life that were affected in these survivors. We also describe predictors of quality of life. Published research reports were included if they described the quality of life of breast cancer survivors diagnosed at least five years earlier. The methodological quality of the 10 selected studies, conducted between 1997 and 2004, was high according to a list of predefined criteria. Most studies reported that long-term survivors of breast cancer experienced good overall quality of life. However, almost all studies reported that breast cancer survivors experienced some specific problems (e.g., a thick and painful arm and problems with sexual functioning). The current medical condition, amount of social support and current income level were strong positive predictors of quality of life, and the use of adjuvant chemotherapy emerged as a negative predictor. More research on the specific medical and psychosocial needs of survivors is needed in order to be able to design appropriate intervention studies. If anything, this review shows that focusing on the long-term effects of breast cancer is important when evaluating the full extent of cancer treatment.

Fatigue, depression, and sleep disturbance are common adverse effects of cancer treatment and frequently co-occur. However, the possibility that inflammatory processes may underlie this constellation of symptoms has not been examined. Women (N = 103) who had recently finished primary treatment (ie, surgery, radiation, chemotherapy) for early-stage breast cancer completed self-report scales and provided blood samples for determination of plasma levels of inflammatory markers: soluble tumor necrosis factor (TNF) receptor II (sTNF-RII), interleukin-1 receptor antagonist, and C-reactive protein. Symptoms were elevated at the end of treatment; greater than 60% of participants reported clinically significant problems with fatigue and sleep, and 25% reported elevated depressive symptoms. Women treated with chemotherapy endorsed higher levels of all symptoms and also had higher plasma levels of sTNF-RII than women who did not receive chemotherapy (all P < .05). Fatigue was positively associated with sTNF-RII, particularly in the chemotherapy-treated group (P < .05). Depressive symptoms and sleep problems were correlated with fatigue but not with inflammatory markers. This study confirms high rates of behavioral symptoms in breast cancer survivors, particularly those treated with chemotherapy, and indicates a role for TNF-α signaling as a contributor to postchemotherapy fatigue. Results also suggest that fatigue, sleep disturbance, and depression may stem from distinct biologic processes in post-treatment survivors, with inflammatory signaling contributing relatively specifically to fatigue.

It is unclear whether breast cancer survivors have a higher risk of long-term symptoms of depression or anxiety. The aim of this study was to systematically review the evidence about long-term symptoms of depression and anxiety in breast cancer survivors.