Laryngeal Cancer (Cancer of the Voice Box) in Singapore

Written & reviewed by the BestDoctors.sg editorial team · Last updated 1 Sep 2026 · General information, not medical advice

The reassuring flip-side of the “hoarseness red flag” is that when laryngeal cancer is caught early, it is very treatable and the voice can usually be preserved – which is exactly why persistent hoarseness should not be ignored.

What it is

Laryngeal cancer is a cancer of the voice box (larynx), the short section of the airway that sits at the top of the windpipe (trachea), just below the throat. The larynx houses the vocal cords and does three jobs: it lets us make sound and speak, it directs air into the lungs, and it closes off the airway when we swallow so that food and drink go down the food pipe rather than into the lungs. Most laryngeal cancers are squamous cell cancers that begin in the thin lining of the larynx.

The larynx has three areas: the glottis (the vocal cords themselves), the supraglottis (above the cords) and the subglottis (below them). Many cancers start on or near the vocal cords. This matters because even a small tumour there disturbs the voice, so the change is often heard early – frequently at a stage when treatment works very well. In other words, the voice box tends to “announce” a problem sooner than many other organs, and that early warning is a genuine advantage if it is acted on.

Warning signs – do not ignore these

The message worth remembering is simple: a hoarse voice or any voice change lasting more than about three weeks should always be checked by a doctor. Most causes of hoarseness are not cancer – a cold, overusing the voice, laryngitis or reflux are far more common – but a persistent, unexplained change is exactly how voice box cancer is often caught early, while it is still very treatable. It is better to be examined and reassured than to wait.

Seek prompt assessment if you have any of the following that do not settle: a hoarse voice or voice change for more than three weeks; a persistent sore throat or cough; a lump in the neck; pain or difficulty swallowing; or persistent ear pain on one side with a normal-looking ear. Noisy breathing, breathlessness or a sensation of the airway narrowing are more serious signs that need urgent medical attention – and if breathing becomes suddenly difficult, or there is heavy bleeding from the mouth or throat, call 995.

Symptoms

The key early symptom is a persistent hoarse voice or change in voice – it may sound rough, weak, breathy or strained. As above, hoarseness lasting more than about three weeks should be assessed rather than waited out.

Other symptoms can include:

• A persistent sore throat or a cough that does not clear.
• Pain or difficulty swallowing, or a feeling of something stuck in the throat.
• A lump or swelling in the neck.
• Persistent ear pain, often on one side, when the ear itself looks normal (referred pain).
• In later stages, noisy or difficult breathing, a weaker voice that tires quickly, or unexplained weight loss.

Symptoms depend on where the cancer starts: tumours on the vocal cords change the voice early, while those above or below the cords may cause throat discomfort, swallowing problems or a neck lump before the voice is affected. No single symptom proves cancer, but a combination that persists deserves a proper look with a scope.

Causes and who is at risk

Laryngeal cancer develops when cells in the lining of the voice box are damaged over time and begin to grow abnormally. The strongest, best-established risk factors are lifestyle-related and, importantly, modifiable:

• Smoking – tobacco is the biggest single risk factor. The more and the longer someone smokes, the higher the risk.
• Alcohol – heavy or regular drinking raises the risk, and smoking and alcohol together multiply the risk far more than either alone.
• Older age – it is more common with increasing age, usually from midlife onwards, and is more common in men.
• Occupational exposures – long-term contact with certain fumes, dusts and chemicals (for example some industrial and construction-related exposures) has been linked to higher risk.
• Acid reflux – long-standing reflux irritating the throat and larynx is associated with laryngeal cancer.
• HPV – the human papillomavirus, better known for its role in some other head and neck cancers, is also linked to a proportion of throat and voice box cancers.
• A previous history of head or neck cancer, or earlier radiotherapy to the neck, can also play a part.

Having a risk factor does not mean someone will develop cancer, and some people with no obvious risk factors still do. But because smoking and alcohol are so dominant, reducing or stopping them is the most powerful thing anyone can do to protect the voice box.

How it is diagnosed

Diagnosis starts with a doctor listening to the history – particularly how long the voice has changed – and examining the throat and neck. A GP or polyclinic doctor who is concerned will refer promptly to an ENT specialist. Key steps usually include:

• Looking at the voice box – the ENT passes a thin, flexible telescope through the nose to view the larynx and vocal cords directly (nasoendoscopy, or laryngoscopy). This is done in the clinic and gives a clear look at any abnormal area.
• Biopsy – if something suspicious is seen, a small sample of tissue is taken and examined under a microscope. A biopsy is what confirms whether cancer is present. It may be done under a brief general anaesthetic during a more detailed examination of the larynx.
• Imaging – CT and/or MRI scans, and sometimes other scans, are used to see how large the tumour is and whether it has spread to nearby tissues or lymph nodes. This staging guides treatment.

Waiting for tests can be an anxious time. It helps to remember that scans and biopsies are done to plan the best, most voice-sparing treatment possible, and that a team of specialists reviews the findings together.

Treatment

Treatment is planned by a multidisciplinary team – typically an ENT/head and neck surgeon, a radiation oncologist, a medical oncologist, along with speech and swallowing therapists, dietitians and specialist nurses. The plan depends on the size and location of the cancer, the stage, and the person’s overall health and wishes. The main options are:

• Radiotherapy – carefully targeted radiation is a common treatment for early-stage laryngeal cancer and often preserves the voice. It may also be combined with chemotherapy (chemoradiation) for more advanced disease.
• Surgery – this ranges widely. For small, early cancers, minimally invasive endoscopic or laser surgery can remove the tumour while keeping the voice box working. Larger cancers may need part of the voice box removed (partial laryngectomy), and in advanced cases the whole voice box may need to be removed (total laryngectomy). After total laryngectomy, breathing is through a permanent opening in the neck (a stoma), and speech is restored through voice rehabilitation rather than the original voice box.
• Chemotherapy – anti-cancer medicines may be used together with radiotherapy, before other treatment to shrink a tumour, or to help control more advanced disease.

A central aim throughout is to preserve voice and swallowing where it is safe to do so, which is why speech and swallowing rehabilitation is part of care from early on, not just afterwards. An ENT specialist and oncologist can explain which combination is most appropriate for a particular cancer, and what the trade-offs are.

Living with and after treatment

Recovery is about more than removing the cancer – it is about voice, swallowing, breathing and emotional wellbeing. Support usually includes:

• Voice and communication – after a total laryngectomy, several ways to speak again are available, including a small valve fitted between the windpipe and food pipe (a voice prosthesis), oesophageal speech, or a handheld electronic device (electrolarynx). A speech therapist guides which option suits best and helps build confidence with it.
• Swallowing therapy – radiotherapy or surgery can affect swallowing, so therapists and dietitians help rebuild safe eating and maintain nutrition.
• Stoma care – those with a permanent stoma learn how to keep the airway clean, humidified and protected as part of daily life.
• Follow-up – regular reviews check that the cancer has not returned and manage any longer-term effects. Any new or returning symptoms between visits should be reported promptly.
• Stopping smoking and limiting alcohol – giving up smoking and cutting down alcohol improves how well treatment works, aids healing, and lowers the risk of the cancer coming back or a new one developing. Help is available; see how to quit smoking.
• Emotional support – a diagnosis affecting the voice can feel isolating. Counselling, cancer support services and patient groups can help, and specialist nurses can point the way to them. In Singapore, the National Cancer Centre Singapore and resources on HealthHub offer information and support services.

Prevention

Because smoking and alcohol drive most cases, the most effective prevention is straightforward: do not smoke – and if you do, getting help to quit is the single most valuable step for the voice box and for overall health. Limit alcohol, and avoid combining heavy drinking with smoking. Managing long-standing acid reflux, protecting yourself from harmful workplace fumes and dusts, and following general advice on HPV where relevant can further reduce risk. Just as importantly, do not ignore a persistent voice change – early attention is a form of prevention against advanced disease.

When to see a doctor

See a GP, polyclinic doctor or ENT specialist if you have a hoarse voice or voice change lasting more than about three weeks, a persistent sore throat or cough, a neck lump, ongoing pain or difficulty swallowing, or persistent one-sided ear pain with a normal-looking ear. Most of the time the cause is not cancer – but this is exactly how voice box cancer is often caught early, when treatment works best, so it is always worth checking. Seek urgent care for difficulty breathing, noisy breathing or heavy bleeding from the mouth or throat, and call 995 if breathing suddenly becomes difficult.

Related ear, nose & throat conditions

• Sudden hearing loss
• Otitis externa (swimmer’s ear)
• Cholesteatoma
• Acoustic neuroma
• Loss of smell (anosmia)
• Vocal cord paralysis
• Salivary gland tumours
• Labyrinthitis & vestibular neuritis
• Enlarged adenoids (children)
• Hearing loss
• Hoarse voice & laryngitis
• ENT specialists in Singapore
• Throat Cancer in Singapore: Signs & Risk Factors

Sources

• NHS — laryngeal cancer: hoarseness >3 weeks red flag; risk factors (smoking, alcohol, age, male, family history, reflux); staging and treatment.
• National Cancer Centre Singapore (NCCS) — larynx cancer: symptoms, nasoendoscopy, early-disease radiotherapy, voice rehabilitation; more common in men.
• NUH / SingHealth (SGH) — larynx cancer: glottic origin, persistent hoarseness, smoking/alcohol, stage-based treatment.
• American Cancer Society — laryngeal cancer symptoms and treatment by stage.