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Contact X-ray brachytherapy for rectal cancer: Past, present, and future
J-P Gérard1, N Barbet2, C Dejean1
1Centre Antoine-Lacassagne, 33, avenue de Valombrose, 06000 Nice, France.
Summary
Contact X-ray brachytherapy (50kV) offers an effective and safe method for long-term local control and organ preservation in early rectal cancers. Further trials aim to expand its role in rectal cancer organ preservation strategies.
Area of Science:
- Oncology
- Radiation Oncology
- Medical Physics
Background:
- Contact X-ray brachytherapy (50kV) has demonstrated efficacy in rectal cancer treatment.
- Previous studies like the Lyon R96-02 trial support its use for local control and organ preservation.
Purpose of the Study:
- To evaluate the efficacy and safety of 50kV contact X-ray brachytherapy for early-stage rectal cancers.
- To assess the role of the Papillon 50™ machine in organ preservation strategies for selected T2-T3ab rectal lesions.
Main Methods:
- Analysis of data from the Papillon experience and the Lyon R96-02 trial.
- Evaluation of the OPERA trial results using the Papillon 50™ device.
Main Results:
- 50kV contact X-ray brachytherapy achieves efficient and safe long-term local control.
- The strategy supports organ preservation for clinical T1 and early T2-T3 rectal cancers.
- The OPERA trial provides additional evidence for this approach in selected T2-T3ab lesions.
Conclusions:
- Contact X-ray brachytherapy (50kV) is an effective and safe organ preservation strategy for selected rectal cancers.
- The Papillon 50™ machine supports this approach for T2-T3ab lesions.
- Future research will focus on expanding the application of contact X-ray boost in rectal cancer organ preservation.
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