Study Overview: This study is looking at how well low-dose radiotherapy, which is a type of radiation treatment, helps to reduce bone pain in patients with multiple myeloma. Multiple myeloma is a type of cancer that starts in the bone marrow and can spread to bones. Radiotherapy uses powerful rays, like x-rays, to kill cancer cells and shrink tumors. The study is testing if a lower dose of this treatment can reduce pain without many side effects.

Study Details: Patients will receive low-dose radiotherapy on two consecutive business days. If pain relief isn't achieved, more treatment might be given after 4 weeks. Follow-ups will happen at 2, 4, and 8 weeks, and also at 6 months. The study aims to see if this treatment can help reduce pain and improve the quality of life.

• Participation Length: The study involves follow-up visits for up to 6 months.
• Eligibility: Participants need a diagnosis of multiple myeloma, have a painful bone lesion, and meet other specific health criteria.
• Exclusions: Prior radiation or surgery on the lesion, certain bone conditions, or being pregnant disqualifies a participant.