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Palliative radiotherapy in plasma cell myeloma
I A Adamietz1, C Schöber, R W Schulte
1Department of Radiotherapy, Medical School, Hannover, F.R.G.
Summary
Local radiotherapy effectively relieves multiple myeloma bone pain. Combining irradiation with chemotherapy significantly improves pain relief rates and duration compared to irradiation alone.
Area of Science:
- Oncology
- Radiotherapy
- Palliative Care
Background:
- Bone lesions in multiple myeloma often cause significant pain.
- Local radiotherapy is a common palliative treatment for myeloma bone pain.
- The impact of systemic chemotherapy on radiotherapy's palliative effect requires further investigation.
Purpose of the Study:
- To evaluate the influence of systemic chemotherapy on the palliative efficacy of local radiotherapy in multiple myeloma patients.
- To compare the response rates and duration of pain relief between patients receiving concurrent chemoradiotherapy and those receiving radiotherapy alone.
Main Methods:
- Retrospective review of 70 multiple myeloma patients.
- Analysis of treatment records for patients receiving chemotherapy (melphalan and prednisone) combined with or followed by local irradiation.
- Assessment of local response rate (complete pain relief) and duration of palliative effect.
Main Results:
- A local response rate of 80% was observed in patients receiving irradiation during chemotherapy, lasting 31.8 months.
- Patients receiving irradiation without systemic treatment had a 39.6% response rate, lasting 24.8 months.
- Higher radiation doses correlated with longer local pain control; response rates decreased with subsequent radiotherapy courses.
Conclusions:
- Concomitant chemotherapy with local irradiation is superior to radiotherapy alone for palliating multiple myeloma bone pain.
- Achieving long-term local pain control necessitates adequate radiation dosing.
- The timing of radiotherapy relative to systemic treatment significantly impacts palliative outcomes.