What is Laryngeal Cancer?
Laryngeal cancer is a malignant (cancerous) growth that originates in the larynx, commonly known as the voice box. The larynx sits at the top of the trachea (windpipe) and houses the vocal cords, which are essential for speech, breathing, and protecting the airway during swallowing. When cells in this region begin to grow uncontrollably, they can form tumors that invade nearby tissues, spread to lymph nodes, and in advanced stages, metastasize to other organs.
According to the American Cancer Society, about 13,000 new cases of laryngeal cancer are diagnosed each year in the United States, and the disease is more common in men than women, typically presenting after age 55.
Common Causes
While no single factor guarantees the development of laryngeal cancer, research has identified several risk factors that significantly increase the likelihood of disease. The following list summarizes the most established causes:
- Tobacco use – Smoking cigarettes, cigars, pipes, or using smokeless tobacco accounts for up to 85% of cases.1
- Heavy alcohol consumption – Chronic, excessive drinking synergistically raises risk, especially when combined with smoking.
- Human papillomavirus (HPV) infection – Certain high‑risk HPV strains (especially HPV‑16) are linked to cancers of the supraglottic larynx.
- Exposure to occupational chemicals – Asbestos, wood dust, paint fumes, and certain metal vapors (e.g., nickel, chromium) increase risk.
- Gastroesophageal reflux disease (GERD) – Stomach acid that reaches the larynx can cause chronic inflammation and cellular damage.
- Diet low in fruits and vegetables – Antioxidant‑rich foods appear protective; deficiency may raise susceptibility.
- Chronic laryngeal irritation – Long‑standing voice abuse, vocal cord nodules, or chronic laryngitis may contribute.
- Genetic predisposition – Familial clusters suggest a hereditary component, though specific genes are still under investigation.
- Immune suppression – Individuals with HIV/AIDS or those on long‑term immunosuppressive therapy have a higher risk.
- Age and sex – Incidence rises after 55 years; men are diagnosed roughly four times more often than women.
Associated Symptoms
Early laryngeal cancer may cause subtle or no symptoms, which is why many diagnoses occur at a later stage. When symptoms do appear, they often involve the voice, breathing, or swallowing:
- Persistent hoarseness or voice change lasting more than 2–3 weeks
- Rough, breathy, or weaker voice quality
- Chronic cough or throat clearing
- Difficulty swallowing (dysphagia) or sensation of food “sticking”
- Feeling of a lump or pressure in the neck
- Ear pain (referred pain) without an ear infection
- Unexplained weight loss
- Shortness of breath or noisy breathing (stridor) if the tumor obstructs the airway
- Bleeding from the mouth or throat, especially after coughing
When to See a Doctor
Because many of the symptoms overlap with benign conditions (e.g., viral laryngitis, reflux), it can be tempting to wait. However, you should seek medical evaluation promptly if you experience any of the following:
- Hoarseness that lasts longer than three weeks, especially in a smoker or heavy drinker.
- Persistent throat pain or ear pain without ear infection.
- Difficulty swallowing or a sensation that food is getting stuck.
- Unexplained, rapid weight loss.
- Noticeable swelling or a lump in the neck.
- New onset of noisy breathing (stridor) or a feeling of airway obstruction.
Early assessment by an otolaryngologist (ENT specialist) dramatically improves treatment outcomes (see NIH).
Diagnosis
Diagnosing laryngeal cancer involves a combination of clinical examination, imaging, and tissue sampling:
1. Medical History & Physical Exam
The physician will ask detailed questions about smoking, alcohol use, voice changes, and any reflux symptoms. A thorough head‑and‑neck exam, including palpation of the neck lymph nodes, is performed.
2. Endoscopic Evaluation
- Flexible fiberoptic laryngoscopy – A thin, lighted tube is passed through the nose to view the vocal cords directly.
- Rigid laryngoscopy with microscope – Provides a high‑resolution view; often done under general anesthesia for biopsy.
3. Imaging Studies
- CT scan (computed tomography) – Offers detailed cross‑sectional images of the larynx, surrounding tissue, and neck lymph nodes.
- MRI (magnetic resonance imaging) – Particularly useful for assessing soft‑tissue invasion and perineural spread.
- PET/CT (positron emission tomography) – Detects metabolic activity of cancer and helps stage distant spread.
4. Biopsy & Histopathology
The definitive diagnosis requires a tissue sample. The pathologist examines the specimen for cancer type (usually squamous cell carcinoma) and grade.
5. Staging
Staging follows the AJCC (American Joint Committee on Cancer) TNM system, which evaluates tumor size (T), nodal involvement (N), and distant metastasis (M). Accurate staging guides treatment planning.
Treatment Options
Treatment is individualized based on tumor stage, location, patient health, and personal preferences. The main modalities include surgery, radiation, and systemic therapy.
Surgical Approaches
- Partial laryngectomy – Removal of the tumor while preserving voice function. Indicated for early‑stage cancers confined to one vocal cord.
- Total laryngectomy – Complete removal of the larynx, typically for advanced disease. Patients breathe through a permanent tracheostomy and may use voice prostheses.
- Transoral laser microsurgery (TLM) – Minimally invasive laser removal done through the mouth, often for small lesions.
- Neck dissection – Surgical removal of affected cervical lymph nodes when nodal spread is present.
Radiation Therapy
- External beam radiation (EBRT) – Standard for early to moderately advanced cancers, sometimes combined with chemotherapy (chemoradiation).
- Intensity‑modulated radiation therapy (IMRT) – Allows precise targeting, sparing healthy tissue.
- Proton therapy – Emerging option that may reduce dose to surrounding structures.
Systemic Therapies
- Chemotherapy – Drugs such as cisplatin, carboplatin, or docetaxel are used concurrently with radiation for organ preservation.
- Targeted therapy – EGFR inhibitors (e.g., cetuximab) may be added for tumors overexpressing the receptor.
- Immunotherapy – Checkpoint inhibitors (e.g., pembrolizumab, nivolumab) are approved for recurrent/metastatic disease.
Rehabilitation & Home Care
- Voice therapy – Speech-language pathologists help patients regain vocal function after surgery or radiation.
- Swallowing exercises – Reduce risk of aspiration and improve nutrition.
- Nutrition support – High‑protein diets, supplements, or feeding tubes when oral intake is difficult.
- Smoking cessation & alcohol moderation – Critical to improve outcomes and prevent recurrence.
- Pain and symptom management – Analgesics, mouth rinses for mucositis, and medications for dry mouth.
Prevention Tips
While not all cases are avoidable, lifestyle modifications can substantially lower risk:
- Quit tobacco – The single most effective preventive measure. Resources such as the CDC’s Quitline are free and evidence‑based.
- Limit alcohol – Keep intake to ≤2 drinks per day for men and ≤1 for women.
- Maintain a balanced diet – Emphasize fruits, vegetables, whole grains, and lean proteins.
- Manage GERD – Use lifestyle measures (elevated head of bed, weight control) and medications (PPIs) as directed.
- Vaccinate against HPV – The 9‑valent HPV vaccine protects against the strain most linked to head‑and‑neck cancers.
- Protect against occupational hazards – Use proper ventilation and personal protective equipment when exposed to dust, fumes, or chemicals.
- Regular medical check‑ups – Especially for high‑risk individuals; early laryngoscopic exams can detect precancerous changes.
Emergency Warning Signs
- Sudden, severe difficulty breathing or inability to speak (stridor).
- Rapid swelling of the neck or throat that compromises the airway.
- Profuse bleeding from the mouth or throat that does not stop with gentle pressure.
- Loss of consciousness or severe dizziness accompanied by throat pain.
**References**
- Mayo Clinic. “Laryngeal cancer.” https://www.mayoclinic.org.
- American Cancer Society. “What Is Laryngeal Cancer?” https://www.cancer.org.
- National Institutes of Health (NIH). “Head and Neck Cancer – Treatment Overview.” https://www.cancer.gov.
- Centers for Disease Control and Prevention. “HPV and Cancer.” https://www.cdc.gov.
- World Health Organization. “Cancers of the head and neck.” https://www.who.int.