Boost radiotherapy explained

It may be delivered as extra treatment sessions or incorporated into the main plan so different areas receive different doses during the same session. Whether it is suitable depends on the cancer, surgery findings, anatomy and nearby healthy tissues.

The boost targets a smaller volume than the broader treatment field. This can be the original tumour site, the surgical bed or a remaining visible area. Planning images and treatment records help the radiation team shape the dose while limiting exposure to surrounding organs.

A boost recommendation does not by itself mean treatment has failed or that cancer remains visible. It can be part of the plan from the outset, based on features that guide local treatment. The benefit and added side-effect burden are weighed for each person.

Attend the planning and treatment appointments with the positioning instructions provided by your centre. Keep skin marks or moulds used for alignment intact, and avoid applying unapproved creams immediately before a session. Tell the team about implanted devices, pregnancy possibility and any difficulty holding the required position.

Side effects depend on the body area treated and can build as treatment continues. Use prescribed skin care, pain relief and mouth or bowel medicines as directed. Report symptoms early so the team can examine the treated area and adjust supportive care without interrupting treatment unnecessarily.

Contact the radiotherapy service promptly for blistering or broken skin, uncontrolled pain, repeated vomiting, inability to drink, fever, or symptoms that are worsening despite prescribed medicines. The relevant warning signs vary with the treatment site, so use the emergency instructions supplied by your centre.

Call emergency services for severe breathing difficulty, collapse, a seizure, sudden weakness or heavy bleeding. Do not wait for the next radiotherapy visit when a symptom is rapidly progressing.

Ask which exact area will receive the boost, how it changes the schedule, what nearby tissues affect planning and which early or later side effects apply to you. It is also reasonable to ask what alternatives exist and how follow-up will assess the treated area.