Survivors of primary breast cancer 5 years after surgery: follow-up care, long-term problems, and treatment regrets. Results of the prospective BRENDA II-study.

This study aims to answer the questions where breast cancer patients in Germany receive follow-up care (with what types of doctors) and what are the long-term problems and treatment regrets of breast cancer patients. In the prospective multicenter cohort study BRENDA II ("Breast Cancer under Evidence-Based Guidelines"), 456 patients with primary breast cancer were sampled consecutively over a period of 4 years (2009-2012) and contacted again 5 years after surgery. Long-term problems were elicited on a 4-point Likert scale ranging from 0 ('not at all') to 3 ('very much'). 82% of the patients receive follow-up (FU) at the private practice gynecologist. In 22%, the initial treating hospital is involved in the FU, and in 20% the general practitioner does this (multiple answers possible). Long-term problems attributed to the treatment were most often related to endocrine therapy (mean 1.29) and to chemotherapy (mean 0.94). Most of the patients were happy to have had radiotherapy (95%). For chemotherapy, endocrine therapy, and antibody therapy, the satisfaction for the treatment decision was 87%, 87%, and 84% respectively. Among patients who reported they regretted having undergone a recommended treatment, it was most often for endocrine therapy (5%) and chemotherapy (4%). In Germany, different specialists are involved in the patients' FU care for BC. The detection of long-term problems due to BC treatment is an essential part of FU care.