
The most common malignant tumorsfrequently metastasize tothe skeleton. Although bonemetastases occur frequently with nearlyall tumors, some cancers (eg, breastand prostate cancer) have a specialpredilection for the skeleton. Complicationsassociated with skeletal metastasessubstantially erode thepatient’s quality of life. These skeletal-related events (SREs) include spinalcord compression, fracture,surgery, radiation therapy, and hypercalcemia.On average, patients withbone metastases experience three tofour SREs per year (one every 3 to 4months). In addition, they frequentlyhave pain and require narcotics, whicherode their quality of life.

