Radiofrequency ablation involves high-frequency radio waves being used to destroy (ablate) a small area of body tissue.
It’s used to treat several types of cancer and other precancerous conditions.
The HALO technique was developed to specifically destroy abnormal Barrett’s oesophagus cells that can develop in the lining of the oesophagus.
These abnormal cells look different, so they can be easily recognised by looking through the camera on an endoscope.
The HALO technique involves an endoscope being passed into your oesophagus.
A small balloon is placed where the abnormal cells are and high-intensity radio waves are passed through the balloon.
This causes intense heating, but only in the region very near to the surface of the balloon.
The abnormal cells are killed, but nearby normal, healthy cells are left unharmed.
After treatment, your surgeon will remove the precancerous cells (dysplasia) and the part of your oesophagus affected by Barrett’s oesophagus.
You can receive HALO treatment as a day patient, which means you don’t need to stay overnight at The London Clinic.
Most people require two or three HALO treatments over a few months to clear the abnormal cells.
Sometimes, HALO radiofrequency ablation needs to be combined with endoscopic mucosal resection (EMR), if your surgeon sees nodules (swellings) in the lining of your oesophagus.
EMR is a procedure to remove precancerous cells, early-stage cancer or other abnormal tissues (lesions) from the digestive tract.