Response Rates of Bone Metastases from Gastrointestinal Cancers to Palliative Radiotherapy
Author Information
Author(s): Hird A., Chow E., Yip D., Ross M., Hadi S., Flynn C., Sinclair E., Ko Y.J.
Primary Institution: Odette Cancer Centre, University of Toronto
Hypothesis
Do bone metastases from gastrointestinal cancers show response rates similar to those of bone metastases from other primary cancers after radiotherapy?
Conclusion
Bone metastases from gastrointestinal cancers demonstrate response rates that are similar to rates for metastases from other primary cancer sites after palliative radiotherapy.
Supporting Evidence
- Patients with symptomatic bone metastases from gastrointestinal malignancies should be referred for palliative radiotherapy as readily as patients with osseous metastases from other primary cancer sites.
- The response rates for gastrointestinal cancer patients were 18% complete response and 42% partial response at 4 weeks after treatment.
- Comparative analysis showed no statistically significant differences in response rates between gastrointestinal and other primary cancer sites.
Takeaway
This study looked at how well radiation therapy works for patients with bone cancer from gastrointestinal cancers. It found that it works just as well for them as it does for patients with bone cancer from other types of cancer.
Methodology
The study analyzed response rates for 69 patients with bone metastases from gastrointestinal cancers who received palliative radiotherapy, comparing their outcomes to 479 patients with metastases from other primary cancer sites.
Potential Biases
Responder bias may have occurred as patients who completed follow-ups may have been those who responded favorably to treatment.
Limitations
The study had a high drop-out rate, with many patients not completing follow-up assessments, which limited the power of the study.
Participant Demographics
{"gender_distribution":{"male":48,"female":21},"median_age":68,"primary_cancer_sites":{"colorectal":68,"pancreatic":16,"gastric":9}}
Statistical Information
Confidence Interval
95%
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