The Spectrum of Head & Neck Oncology

Head and neck oncology is the diagnosis and treatment of cancers of the mouth, throat, voice box, nose and sinuses, salivary glands and thyroid. Its goal is cure with function intact: speech, swallowing and appearance preserved. Outcomes depend less on any single operation than on how early the cancer is recognised, how quickly the patient reaches a multidisciplinary team, and how well survivorship is managed afterwards.

Dr. Priyanka Raina, Senior Consultant (Head & Neck Surgery) - Surgical Oncology, Artemis Hospitals, Gurugram, India, frames the specialty around one principle: geography should not be a barrier to cure. Every patient, in her words, has the right to the right treatment at the right time. In many countries the obstacles are the same: patients report late, present at an advanced stage, and struggle to reach tertiary care. Collaboration between doctors across borders is how that gap closes.

This guide sets out the full spectrum of the specialty as she taught it. Three companion articles go deeper: red flags, the 60-second oral examination and urgent referral, diagnosis, biomarkers, staging and treatment, and surgical advances, reconstruction and voice rehabilitation.

What head and neck oncology covers

The specialty spans several anatomically distinct sites, each with its own behaviour and treatment logic:

• Oral cavity cancers: the lips, buccal mucosa, tongue, floor of the mouth and palate. These are the most common head and neck malignancies.
• Pharyngeal and laryngeal cancers: the nasopharynx, oropharynx and hypopharynx, and the larynx (voice box).
• Salivary gland tumours: most often the parotid gland.
• Nasal cavity and paranasal sinus tumours, which can extend to the skull base.
• Thyroid and parathyroid disease, often managed within combined endocrine and head and neck pathways.
• The neck itself: an enlarged cervical lymph node is sometimes the first sign of an occult primary, a cancer whose origin is not yet visible.

Dr. Raina's department works as a high-volume oncology centre with surgical oncology, radiation oncology, medical oncology and nuclear medicine under one roof, so treatment is planned jointly rather than handed from one specialist to the next.

How common is head and neck cancer?

Head and neck cancer is the seventh most common cancer worldwide, with close to 950,000 new cases a year according to GLOBOCAN 2022 estimates. The oral cavity and lip account for about 41% of cases, the larynx about 20%, the nasopharynx about 13%, the oropharynx about 11% and the salivary glands about 6%.

Men account for roughly 70% of cases and women 30%, but Dr. Raina noted that this pattern is changing and that women are clearly susceptible too. A second shift matters as much: the disease increasingly affects younger people worldwide, departing from the historic cohort of older patients.

Head and neck cancer risk factors

The traditional carcinogens remain dominant:

• Tobacco, smoked or chewed, and alcohol.
• Betel nut (areca nut), a common part of the culture in some parts of the world.
• Chronic dental trauma, oral candidiasis (thrush) and poor oral hygiene.

Biological and viral drivers are emerging alongside them. Human papillomavirus (HPV) underlies a global rise in oropharyngeal cancer. Epstein-Barr virus (EBV) is linked to nasopharyngeal carcinoma. Immunosuppressive conditions such as HIV also raise risk.

Why early diagnosis decides the outcome

Dr. Raina described primary care screening as the gatekeeper of prognosis: early diagnosis is what moves a patient from a terminal stage to a highly curable one. Head and neck cancers, unlike many cancers elsewhere in the body, become symptomatic quickly and often visibly, which gives first-contact doctors, general practitioners and dentists, a genuine chance to catch them early.

The common error, in her account, is empirical treatment. A persistent ulcer, a mobile tooth or an adult neck lump is treated as an infection, the patient receives course after course of antibiotics, and the golden period for curative treatment is lost. Her guidance is to refer on suspicion and not to wait for local tests. The red flags, the structured 60-second oral examination and the three-tier urgency system are covered in detail in the companion article on red flags and referral.

Which head and neck cancers are most urgent

Asked to rank the sites by urgency for patients who face a lead time before they can travel, Dr. Raina gave a clear hierarchy:

1. Laryngeal and hypopharyngeal cancers come first, because they quickly compromise the airway.
2. Oral cavity cancers come next. If the patient waits, an early, operable cancer becomes locally advanced; chemotherapy then has to be given first, and upfront surgery is no longer possible.
3. Thyroid and salivary gland cancers follow.

Across all sites, breathing difficulty, stridor (noisy, high-pitched breathing from a narrowed airway) or a rapidly enlarging mass in the mouth or neck calls for immediate referral.

Multidisciplinary treatment of head and neck cancer

Treatment is planned by a tumour board. In Dr. Raina's practice the core team includes the head and neck surgeon, radiation oncologist, medical oncologist, radiologist and pathologist, with a physiotherapist and a speech and swallowing therapist always involved. A social worker and a dentist join where needed.

The decision rests on four inputs: the stage, the pathology, the patient's fitness and function, and the patient's preferences. Treatment is always stage-specific and site-specific. Early oral cancer is usually resected, with or without adjuvant treatment (treatment given after surgery); early laryngeal cancer can often be treated with voice-preserving approaches; locally advanced oral cavity cancer is treated with surgery and risk-adapted adjuvant therapy, while at sites such as the larynx and oropharynx chemoradiotherapy is often an alternative to primary surgery; recurrent and metastatic disease receives individualised systemic therapy, radiotherapy, surgery in selected cases, clinical trials and symptom-directed care. The full pathway from biopsy to immunotherapy is set out in the article on diagnosis, staging and treatment.

Quality of life and survivorship after head and neck cancer

For Dr. Raina, the measure of a head and neck surgeon is not only the ability to resect a tumour cleanly but the ability to reconstruct so that the patient can swallow, speak and face the world. Good cosmesis, in her view, is the patient's right. Survival and quality of life carry equal weight with tumour control, and survivorship care rests on five pillars:

• Speech and swallowing therapy, started before surgery where possible.
• Oral and dental hygiene, which directly affects the consequences of radiotherapy and healing after surgery.
• Psychosocial support for distress, stigma about body image, and work and family needs. Her team runs a club where patients facing a laryngectomy or a major composite ("commando") resection can meet survivors who have had the same operation, which markedly lifts their morale.
• Nutrition: weight monitoring, adequate protein and energy intake, and feeding support.
• Function and appearance, planned from the outset of surgery.

Microvascular reconstruction, robotic and laser surgery, nerve monitoring and voice prostheses are the tools that make these goals achievable; the article on surgical advances walks through them case by case.

Head and neck cancer follow-up schedule after treatment

Follow-up is most frequent in the first two years after treatment. Dr. Raina cited the NCCN guideline schedule:

Most recurrences, roughly three quarters in large series, occur within the first two years, so that window needs the closest monitoring. She acknowledged that the schedule cannot be followed everywhere, because patients from rural areas may be unable to return and some are lost to follow-up, but the advice to the patient should still be follow-up every 1 to 3 months in the first year.

Imaging and tests complete the protocol:

• Baseline imaging 3 to 6 months after treatment, with PET-CT or CT/MRI of the treated region, establishes a "new normal" for later comparison.
• Ongoing imaging with high-resolution CT or PET-CT, which she considers important. NCCN guidance reserves routine reimaging beyond the baseline for areas that are hard to examine clinically or for new signs and symptoms, with chest CT for smokers following lung cancer screening criteria.
• Thyroid function tests every 6 to 12 months, especially after neck radiotherapy, to detect hypothyroidism.
• Dental review every 6 to 12 months.
• Circulating HPV DNA and EBV DNA as emerging biomarkers when recurrence is suspected.

Emergencies after treatment

Dr. Raina listed the oncologic emergencies that any doctor following a head and neck patient must recognise and escalate at once:

• Airway obstruction. Patients with laryngeal cancer may develop laryngeal oedema during or after radiotherapy and present with stridor.
• Major bleeding from the oral cavity or oropharynx after resection.
• Dehydration and sepsis from poor intake, aspiration, fever or severe mucositis (painful inflammation of the lining of the mouth and throat). Dr. Raina commonly sees low sodium (hyponatraemia) when intake falls during or after radiotherapy; it is an emergency that needs admission and rehydration.

Where airway compromise is possible, she was explicit: do not perform blind instrumentation and do not delay transfer.

Referral as a partnership

Many patients travel across borders for treatment, and Dr. Raina described a referral as a partnership, not a transfer. Before travel, the referring doctor shares records so the receiving team can triage the case and propose investigations and a treatment plan, which lets the family plan finances and logistics. After arrival, pathology and imaging are re-reviewed and repeated where needed. At discharge, the receiving team sends the referring doctor a clear summary and follow-up plan, and both sides agree in advance who manages complications once the patient is home. The referral checklist itself is set out in the article on red flags and referral.

Her take-home message reduces the specialty to four verbs. Look: examine the oral cavity and the neck. Do not delay: stop repeating empirical treatment for unexplained, persistent lesions. Link: refer to an experienced head and neck oncology team and track the appointment. Support: rehabilitation, nutrition and surveillance continue after the patient returns home. Early recognition, coordinated referral and multidisciplinary care give the best chance of a meaningful outcome.

The questions doctors raised in the session, on screening, imaging without PET-CT and voice prostheses, are answered in full on the Live Discussion page. More about Dr. Raina's training and surgical practice is on her profile, and related cancer topics are gathered under Oncology.