Radiation-Induced Esophagitis: Prevention and Treatment

Radiation-induced esophagitis is inflammation and injury of the oesophagus after radiotherapy, most often during treatment for lung, breast, oesophageal or mediastinal cancer. It may cause painful swallowing, difficulty swallowing, chest discomfort and reduced food intake. Symptoms commonly emerge in the second or third week of a course and can continue for several weeks after treatment finishes.

The risk depends on the amount of radiation reaching the oesophagus, the length of oesophagus exposed and the use of concurrent chemotherapy or immunotherapy. Reflux, smoking, diabetes, poor nutrition and previous oesophageal disease can add to the burden. Late effects, including scarring and narrowing, may appear months or years later.

For Australian patients, care is usually coordinated between a radiation oncologist, medical oncologist, dietitian, speech pathologist and specialist nurse. Treatment may occur at a public hospital, a private cancer centre or a service such as Peter MacCallum Cancer Centre in Melbourne, with travel and appointment timing affecting practical meal planning.

The aim is to preserve safe swallowing, hydration and nutrition while controlling pain and treating complications promptly. People receiving thoracic radiotherapy should report new swallowing symptoms rather than waiting for them to become severe.

Why Oesophageal Injury Occurs

Radiotherapy can damage the rapidly renewing lining of the oesophagus. Inflammation increases as treatment accumulates, making solid food, acidic drinks and very hot meals uncomfortable. When chemotherapy is given at the same time, mucosal damage and infection risk may be greater.

Dose distribution matters. Modern intensity-modulated radiotherapy and image-guided techniques can reduce exposure to healthy tissue, although the oesophagus cannot always be completely spared. A tumour near the oesophagus, enlarged lymph nodes or a large treatment field may limit these options.

Planning Before Radiotherapy

Before treatment starts, the oncology team should review swallowing, reflux, dental health, weight, alcohol and smoking. A baseline dietitian assessment is valuable for anyone who has already lost weight or has a limited diet. Patients with pre-existing dysphagia may need speech pathology input before the first fraction.

Australian radiotherapy services operate under state and territory requirements, while national safety guidance from the Australian Radiation Protection and Nuclear Safety Agency supports safe medical exposure practices. Patients can ask how the treatment plan protects the oesophagus and whether breath-control or other positioning methods are suitable.

Practical Prevention During Treatment

Small, frequent meals are often easier than three large meals. Soft foods such as porridge, yoghurt, scrambled egg, soup, pasta and tender fish may be better tolerated than dry meat, crusty bread or raw vegetables. An Australian dietitian can suggest locally available oral nutrition supplements if weight begins to fall, while checking sugar, lactose or allergy needs.

Water should be taken regularly, with extra attention during hot weather in cities such as Brisbane, Perth and Adelaide. Some people find tea, coffee, alcohol, citrus, chilli and carbonated drinks aggravating; avoiding personal triggers is more useful than imposing a universal diet. Smoking should stop because it delays tissue healing and can worsen reflux.

Medicines And Symptom Control

Pain relief should be individualised. Simple analgesics may help mild discomfort, while prescribed liquid medicines can be easier to swallow when pain is significant. A proton pump inhibitor or another reflux treatment may be appropriate when acid exposure contributes, but it should be selected by the treating clinician rather than started indefinitely without review.

Mouth care is important because oral soreness, thrush and dry mouth can make swallowing harder. A clinician may prescribe a topical anaesthetic or antifungal treatment after examination. Avoid swallowing large tablets if they cause sticking; pharmacists can advise whether a liquid, dispersible or crushable formulation is safe.

When Specialist Assessment Is Needed

Urgent review is needed for inability to swallow fluids, repeated vomiting, signs of dehydration, coughing during meals, fever, bleeding or rapidly worsening chest pain. These symptoms can indicate severe inflammation, infection, aspiration or a less common complication such as an ulcer or fistula.

Persistent dysphagia after treatment needs investigation rather than automatic attribution to radiation. Endoscopy may identify a stricture, ulcer, reflux injury, infection or recurrent cancer. Oesophageal dilation can improve a radiation-related narrowing, but it must be planned carefully by an experienced gastroenterology team because irradiated tissue is more fragile.

Coordinating Follow-Up Care

Follow-up should include weight, hydration, swallowing safety and the ability to maintain ordinary meals. Public patients may use Medicare-supported services, while private patients should check cover for dietetics, endoscopy and speech pathology. Waiting times vary between metropolitan centres and regional areas, so early referral is sensible when symptoms are progressing.

The ISDE 2021 congress materials reflect the value of multidisciplinary education in oesophageal disease; clinicians reviewing the event’s information can still find the registration details in the congress archive. For an Australian patient, the practical next step is to tell the radiation oncology nurse about any swallowing pain at the next treatment visit and request a dietitian review before weight loss becomes substantial.