NCIt definition : The chloride salt of a radioactive isotope of strontium. Strontium chloride Sr 89
is taken up and incorporated preferentially in metastatic lesions in bone where it
emits cytotoxic beta radiation, resulting in an inhibition and/or reduction of tumor
growth and so tumor-related bone pain. (NCI04);
Alternative definition : NCI-GLOSS: A salt form of the radioactive metal strontium-89 that is absorbed by a
part of growing bone. It is being studied in the treatment of bone pain caused by
cancer that has spread to the bone.;