Stereotactic Ablative Radiotherapy (SABR), also known as Stereotactic Body Radiation Therapy (SBRT), offers an advanced treatment option for lung cancer patients. This non-invasive therapy delivers high doses of radiation to tumours with extreme precision. This precision is achieved through advanced imaging techniques, such as CT scans and PET, which allow doctors to precisely locate the tumour and target it with radiation beams from multiple angles. By concentrating radiation on the tumour while minimising exposure to surrounding healthy tissue, SABR aims to destroy cancer cells while sparing nearby organs.
SABR’s precision often helps preserve patients’ quality of life during and after treatment. Like any medical intervention, SABR comes with its own set of potential side effects. Understanding these side effects is crucial for patients embarking on this treatment journey.
Stereotactic Ablative Radiotherapy (SABR) for lung cancer is typically administered using cutting-edge treatment machines like linear accelerators (Linacs) or CyberKnife systems. These advanced devices provide precise targeting capabilities, reducing radiation exposure to healthy tissues while effectively treating the tumour.
Linacs, widely used for SABR, employ high-energy X-ray beams shaped to match the tumour’s contours from various angles.
CyberKnife systems use robotic technology to deliver radiation beams with exceptional accuracy from multiple directions.
The MR-Linac combines high-resolution MRI scanning with extremely precise radiation delivery. With real-time MRI, it is possible to monitor the exact position and shape of your tumour during treatment, even if it has moved.
Both Linacs and CyberKnife systems can deliver the high radiation doses necessary for SABR while prioritizing patient safety and comfort. This advanced technology ensures optimal treatment outcomes for lung cancer patients undergoing SABR.
We’ll talk with you about the relative merits of each system for your individual needs before making a final treatment recommendation.
I treat patients with SABR for lung cancer at The Cromwell Hospital, The London Clinic and The Harley Street Clinic.
What are the common side-effects of SABR for lung cancer?
- Fatigue: Feeling tired or fatigued is a common side effect of radiation therapy, including SABR. Patients may experience increased fatigue as treatment progresses, but it usually resolves within a few weeks after completing SABR.
- Chest discomfort: Some patients may experience mild discomfort or chest pain during or after SABR treatment. This is usually temporary and can be managed with over-the-counter pain medications prescribed by your healthcare team.
- Skin reactions: Skin reactions, such as redness or irritation, may occur in the treatment area. These reactions are typically mild and temporary, resembling a sunburn, and can be managed with gentle skincare practices that we’ll provide when you start treatment.
- Breathing changes: In some cases, patients may experience temporary changes in breathing patterns or shortness of breath following SABR treatment. These symptoms are usually mild and resolve on their own over time.
- Radiation pneumonitis: Radiation pneumonitis is an inflammation of the lung tissue caused by radiation therapy. While relatively rare, it can occur as a side effect of SABR treatment for lung cancer. Symptoms may include coughing, difficulty breathing, and chest pain. Prompt medical attention is necessary if these symptoms occur. These symptoms usually resolve promptly after starting a course of steroids – though this is rarely needed
Frequency of the side effects of SABR for lung cancer
It’s important to note that while side effects can occur with SABR, they are typically mild and temporary, with most patients experiencing minimal disruption to their daily activities. The frequency and severity of side effects can vary depending on factors such as the size and location of the tumour, the dose of radiation delivered, and individual patient characteristics.
According to research studies and clinical trials, the incidence of severe (grade 3 or higher) side effects with SABR for lung cancer is relatively low, ranging from 1% to 10%. Common mild to moderate side effects, such as fatigue and chest discomfort, are more frequently reported but are generally well-tolerated and manageable with supportive care measures.
Before you start treatment, you’ll be given a number that gives you access to support and care 24/7 if you were to be concerned about your symptoms.