Radiation Therapy for Liver Malignancies
Summary
Radiation therapy has emerged as a vital component in the management of both primary and secondary liver malignancies, addressing a spectrum from curative intent to symptomatic palliation. Historically limited by the liver’s sensitivity to radiation and the challenges of respiratory motion, advances in imaging, planning and delivery have transformed practice. External beam techniques such as stereotactic body radiotherapy (SBRT) allow high ablative doses to be delivered in few fractions with submillimetre precision, while interstitial high-dose-rate brachytherapy (HDR-BT) enables direct intratumoural radiation with rapid dose fall-off. Newer approaches, including magnetic resonance image-guided adaptive radiotherapy, permit real-time tracking of tumour position and daily plan adaptation to optimise tumour control and spare healthy parenchyma. Palliative regimens provide symptom relief in advanced disease, whereas ablative regimens achieve local control rates comparable to surgery in selected patients. The interdisciplinary integration of radiation oncology with hepatology, interventional radiology and medical oncology underpins individualised treatment pathways and highlights the global significance of radiation modalities in extending survival and quality of life for patients with liver tumours.
Research from Nature Portfolio
Recent studies have evaluated single-fraction palliative radiotherapy for patients with symptomatic hepatocellular carcinoma who are ineligible for resection or other locoregional therapies. These investigations demonstrated that a single high-dose treatment can alleviate pain and discomfort in approximately half of treated individuals, maintain symptom control for several months and incur minimal high-grade gastrointestinal toxicity. Such findings underscore the feasibility and tolerability of simplified palliative regimens in advanced liver cancer, expanding options for symptom management.
Radiation Therapy for Liver Malignancies publication trend
The graph below shows the total number of articles in radiation therapy for liver malignancies across all publications each year (not limited to Nature Index journals).
Technical terms
Stereotactic body radiotherapy (SBRT): A technique delivering high-dose radiation in a small number of fractions with submillimetre targeting accuracy.
High-dose-rate brachytherapy (HDR-BT): An internal radiation method in which a radioactive source is temporarily placed within or near a tumour to deliver a high dose with rapid dose fall-off.
Biologically effective dose (BED): A calculation that accounts for total dose, fractionation and tissue radiobiology to compare different radiation regimens.
Magnetic resonance image-guided adaptive radiotherapy (MRgART): A system combining real-time MR imaging with daily treatment plan adjustments to track tumour motion and optimise dose delivery.
References
- Palliative Liver Radiotherapy (RT) for Symptomatic Hepatocellular Carcinoma (HCC). Scientific Reports (2020).
- Comparison of liver exposure in CT-guided high-dose rate (HDR) interstitial brachytherapy versus SBRT in hepatocellular carcinoma. Radiation Oncology (2021).
- Radiotherapeutic treatment options for oligotopic malignant liver lesions. Radiation Oncology (2021).
- Magnetic Resonance Imaging-Guided Adaptive Radiotherapy for Colorectal Liver Metastases. Cancers (2021).
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