Remission of bone metastases after combined chemotherapy and radionuclide therapy with Re-186 HEDP.

A patient with disseminated osseous metastases due to breast cancer reported multifocal pain. Because of persisting pain after a first cycle of chemotherapy, 1,295 MBq Re-186 HEDP was administered intravenously. Excellent pain relief was observed. Subsequently, the patient received further combined chemotherapy and Re-186 HEDP therapy and remained pain free. Tc-99m MDP bone imaging showed a significant regression of osseous metastases. It may be speculated that the combination of Re-186 HEDP and chemotherapy results in significantly increased palliation of metastatic bone disease.