Oropharyngeal Cancer Timeline: Chemoradiation

Chemoradiation, radiation given together with cisplatin chemotherapy over about 7 weeks, is the usual track for larger or more advanced oropharyngeal cancers.

This page is one of six treatment-track timelines for oropharyngeal cancer. The steps before treatment, how a track is chosen and the long-term follow-up schedule are covered on the oropharyngeal cancer treatment timelines page.

Who follows this track

Chemoradiation is the usual track for larger tumors or more involved lymph nodes, both HPV-positive and HPV-negative. For HPV-positive cancers with lymph nodes matted together or cancer clearly growing outside a node, and for the most advanced HPV-positive cancers, it is usually favored over surgery. Surgery followed by added treatment (with radiation or with chemoradiation) is an alternative for some. People who cannot safely receive cisplatin, for example because of kidney problems or hearing loss, may receive radiation alone or a different drug instead.

Before treatment (weeks 0 to 4)

The biopsy, scans, p16 (HPV) result, meetings with the care team, dental check, baseline swallow test, dietitian visit and the tumor board's recommendation are described on the overview page. Because cisplatin is planned, a baseline hearing test is also done.

Treatment (about weeks 5 to 12)

• Radiation is given 5 days a week for about 7 weeks. A typical full dose is 70 Gray (Gy).

• Cisplatin chemotherapy is given by IV during the weeks of radiation and makes the radiation work better. In large studies, replacing cisplatin with the gentler drug cetuximab led to worse results, so cisplatin remains the standard for those who can take it.

• Feeding tube: a temporary feeding tube is needed by a portion of people. It is sometimes placed before treatment begins, in case eating becomes too hard, and sometimes during treatment. It is usually temporary and usually removed within the year, but not always.

Side effects and healing

Side effects build gradually over the 7 weeks, are usually at their worst in the last week or two of treatment and the 1 to 2 weeks after it ends, and then slowly improve. These weeks are usually the hardest, and the care team manages pain, nausea, nutrition and dehydration closely.

• Sore mouth and throat (mucositis): starts around week 2 of treatment, peaks near the end, and usually heals within 3 to 4 weeks after treatment ends.

• Swallowing: difficulty and pain with swallowing peak late in treatment, and most improvement happens over the following 6 to 12 months. Swallowing exercises are a central part of recovery.

• Taste: changes begin a few weeks in; most taste returns over 3 to 12 months, though some changes can linger.

• Dry mouth: begins early. Modern targeted radiation spares saliva glands, so saliva often partly recovers over 1 to 2 years, though some dryness can last.

• Weight loss and tiredness: very common. Many people lose around 10 percent of their body weight.

• Cisplatin effects: nausea, hearing changes or ringing in the ears, and low blood counts, which are checked with blood tests during treatment.

• Recovery: energy and eating improve steadily, with major gains by 3 to 6 months and continued improvement up to a year. Return to work averages around 5 months.

Check-ups and scans

• The follow-up clock starts at the end of treatment, about week 12.

• A PET-CT scan about 12 weeks after treatment checks whether it worked. A clear scan at 3 months is very reassuring; scans earlier than 12 weeks can give false alarms from healing inflammation.

• Check-ups then follow the usual schedule: every 1 to 3 months in the first year, every 2 to 6 months in the second, every 4 to 8 months in years 3 to 5, then yearly.

Quality of life on this track

Average scores before and after treatment (0 to 100; swallowing 20 to 100; higher is better):

• Overall: 72 before treatment, 49 at the end of treatment, 70 at 3 months, 73 at 6 months and 78 at 1 year.

• Swallowing: 93 before, 81 at 3 to 6 months and 87 at about 2 years.

• Speech: 86 before, 50 at the end of treatment, 80 at 3 months, 84 at 6 months and 88 at 1 year.

• Mood: 77 before, 70 at the end of treatment, 82 at 3 months, 83 at 6 months and 85 at 1 year.

This timeline shows the full pattern: scores fall sharply by the end of treatment, when side effects peak, and recover most of the way within about 3 months. By 1 year, overall, speech and mood scores are at or above where they started, while swallowing recovers more slowly.

Where the numbers come from: the overall, speech and mood scores come from the cisplatin group of a large randomized study of people with HPV-positive oropharyngeal cancer, which measured scores at the end of treatment and at several points afterward. The swallowing scores come from a large study that reported chemoradiation separately. The questionnaires are described on the quality-of-life questionnaires page.

Long-term care

• Dental visits and possible fluoride treatments continue for life, because of the jaw-healing risk after radiation (osteoradionecrosis).

• A thyroid blood test (TSH) every 6 to 12 months for 3 years checks for hypothyroidism, which radiation to the neck can cause.

• Swallowing exercises and periodic checks continue; some survivors develop swallowing trouble that appears or worsens years later.

• Hearing changes after cisplatin can persist, and hearing aids help when needed (see hearing loss treatments).

• Staying tobacco-free lowers the risk of the cancer returning or a new cancer.