Head and neck cancers are a group of cancers that develop in the tissues and organs of the head and neck region. Most begin in the squamous cells that line the moist surfaces of the mouth, throat, and voice box, and are called head and neck squamous cell carcinomas (HNSCC).
Common types
These cancers can occur in the:
- Oral cavity (lips, tongue, gums, floor of the mouth, inner cheeks, hard palate)
-
Pharynx (throat)
- Nasopharynx (behind the nose)
- Oropharynx (tonsils and base of the tongue)
- Hypopharynx (lower throat)
- Larynx (voice box)
- Nasal cavity and paranasal sinuses
- Salivary glands (less common and often different types of cancer)
Risk factors
Major risk factors include:
- Tobacco use (smoking, chewing tobacco)
- Alcohol consumption, especially combined with tobacco
- Infection with human papillomavirus (HPV), particularly for cancers of the oropharynx
- Infection with Epstein–Barr virus (EBV), especially for nasopharyngeal cancer
- Excessive sun exposure (for lip cancer)
- Poor oral hygiene and chronic irritation
- Occupational exposure to wood dust, nickel, asbestos, or certain chemicals
- Increasing age (though HPV-related cancers are increasingly seen in younger adults)
Symptoms
Symptoms depend on the location but may include:
- A mouth ulcer or sore that does not heal within 2–3 weeks
- A lump in the neck
- Persistent sore throat
- Difficulty or pain when swallowing
- Hoarseness or voice changes lasting more than 3 weeks
- Ear pain, especially on one side
- Persistent nasal blockage or nosebleeds
- Unexplained weight loss
- Red or white patches in the mouth
Diagnosis
Diagnosis usually involves:
- Medical history and physical examination
- Endoscopy to examine the throat and voice box
- Biopsy (required to confirm cancer)
- Imaging such as CT, MRI, PET-CT, or ultrasound
- HPV or EBV testing for certain cancers
Staging
Cancer is staged using the TNM system:
- T – Size and extent of the primary tumor
- N – Spread to nearby lymph nodes
- M – Spread (metastasis) to distant organs
Stages generally range from I (early) to IV (advanced).
Treatment
Treatment depends on the cancer's site, stage, HPV status (when relevant), and the patient's overall health. Options include:
- Surgery
- Radiation therapy
- Chemotherapy
- Targeted therapy (for selected patients)
- Immunotherapy (for certain advanced or recurrent cancers)
- Combinations of these treatments
Treatment is often planned by a multidisciplinary team that may include surgeons, radiation oncologists, medical oncologists, dentists, speech therapists, and nutrition specialists.
Prognosis
The outlook depends on:
- Cancer type and location
- Stage at diagnosis
- HPV status (HPV-positive oropharyngeal cancers often have a better prognosis)
- Overall health and response to treatment
Early-stage cancers generally have much higher cure rates than advanced-stage disease.
Prevention
You can reduce the risk by:
- Avoiding tobacco in all forms
- Limiting alcohol intake
- Receiving the HPV vaccine (before HPV exposure provides the greatest benefit)
- Practicing good oral hygiene
- Using lip protection from excessive sun exposure
- Having persistent mouth sores, lumps, or hoarseness evaluated promptly
When to see a doctor
Seek medical evaluation if you have:
- A mouth sore that doesn't heal within 2–3 weeks
- A neck lump lasting more than 2 weeks
- Persistent hoarseness for more than 3 weeks
- Difficulty swallowing that persists or worsens
- Unexplained weight loss or ongoing throat pain
Early diagnosis greatly improves the chances of successful treatment. If you're asking because you or someone you know has symptoms or has been diagnosed with a specific head and neck cancer, I can provide more detailed information tailored to that situation.
