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Neuropathic Pain Features in Patients with Bone Metastases
N Nakamura1, O Takahashi2, S Zenda3
1Department of Radiation Oncology, National Cancer Center Hospital East, Kashiwa, Japan; Department of Radiation Oncology, St. Luke's International Hospital, Tokyo, Japan.
Clinical Oncology (Royal College of Radiologists (Great Britain))
|November 6, 2015
Summary
A significant number of patients with bone metastases experience neuropathic pain, impacting palliative radiotherapy effectiveness. Further research is needed to understand this pain and its treatment response.
Area of Science:
- Oncology
- Pain Medicine
- Radiotherapy
Background:
- Neuropathic pain features are common in patients with painful bone metastases.
- Understanding the prevalence of neuropathic pain is crucial for optimizing palliative radiotherapy.
- Validated screening tools exist, but their application in this specific patient group requires further study.
Purpose of the Study:
- To estimate the prevalence of neuropathic pain features in patients receiving palliative radiotherapy for painful bone metastases.
- To identify potential correlations between neuropathic pain features and patient characteristics.
- To assess the impact of neuropathic pain on the response to palliative radiotherapy.
Main Methods:
- A cohort survey of 87 consecutive patients receiving palliative radiotherapy for painful bone metastases was conducted.
- Patients were prospectively assessed using a validated Japanese screening questionnaire for neuropathic pain components.
- Pain response was evaluated 2 months post-radiotherapy using International Bone Metastases Consensus Working Party criteria.
Main Results:
- Twenty-four percent of patients (95% CI: 16-35%) were diagnosed with pain exhibiting neuropathic features.
- No significant correlations were found between neuropathic pain features and patient characteristics on multivariate analysis.
- Overall response rates to radiotherapy were similar between patients with and without neuropathic pain features (59% vs. 55%).
Conclusions:
- A considerable proportion of patients with painful bone metastases present with neuropathic pain features.
- Further research is warranted to validate symptom assessment tools and clarify the influence of neuropathic pain on radiotherapy response.
- Investigating pain distribution and imaging findings alongside symptom assessment may improve understanding.
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