The PRO Bone project will recruit a representative cohort of patients with breast or prostate cancer suffering from bone metastases. The aim of this study is to collect data on Patient Reported Outcomes (PRO)/Quality of Life regarding bone pain and the impact of bone pain on quality of life and daily activities. PROs are assessed by a questionnaire consisting of a visual analog scale for bone pain, two questions regarding bone pain management, the bone pain module of FACT questionnaire (FACT-BP) and four questions addressing the impact of treatment on daily life (overall, social life, ability to work and ability to perform routine tasks)
