Radiotherapy after parotidectomy: who needs it | CION Cancer Clinics

Most people who have a benign parotid tumour removed do not need radiotherapy. It is usually advised after surgery for a parotid cancer when the microscope report shows a higher chance of the cancer coming back: a high grade, cancer close to the edge, cancer along a nerve, or cancer in the neck lymph nodes.

What radiotherapy is for here

Surgery removes what can be seen and felt. Radiotherapy uses carefully aimed high-energy X-rays to treat any cancer cells that may be left in the area where the tumour was. After parotid surgery this is called adjuvant radiotherapy, which means treatment given after the operation to lower the chance of recurrence (the cancer coming back).

Why the decision waits for the report

The final histopathology report, the laboratory report on the tissue that was removed, is what tells the team whether radiotherapy is likely to help. Before that report, nobody can say for certain. That is why the question is often answered at the appointment after surgery rather than before it.

Who it usually does not suit

A small, low-grade cancer removed with a clear margin often needs no radiotherapy. Neither does a benign tumour removed cleanly for the first time. Radiotherapy also has lasting effects of its own, so the team weighs the benefit against them for each person.

Side effects build up over the course and are usually worst towards the end and for a few weeks after it. Most of the early ones settle. Some later ones can stay.

In the weeks of treatment

The skin over the treated side can turn red, dry and sore, rather like sunburn. The inside of the cheek and mouth on that side can become sore, and food may taste different. Tiredness is common. Tell the team early, because mouth and skin problems are easier to settle when they start.

Effects that can last

Because only one side is usually treated, a dry mouth is often milder than after radiotherapy to both sides, but it can still happen. Some people notice stiffness in the jaw, a blocked or dull feeling in the ear on that side, or changes in the teeth over the years. Regular dental care matters for life.

What to ask about the technique

Modern planning can shape the dose to spare nearby healthy tissue. Ask the centre which technique they plan to use and how they protect the other saliva glands, the ear and the jaw.

It cannot tell you whether radiotherapy is right for you, and it cannot tell you what your outlook is. Those depend on the type of cancer, its grade and stage, your report and your general health.

Questions worth asking

Which findings on my report led to this advice? What do you expect to gain from it, in plain words? What happens if I choose not to have it? How many weeks will it last, and when should it start? Which side effects might stay? Will the neck be treated too?

For the family member arranging treatment

Daily visits for several weeks are hard to manage from a district. Ask early about timings, about staying near the centre, and about Aarogyasri, CGHS, ECHS, EHS or cashless insurance for the course, so travel and cost do not become the reason treatment is delayed.