Larynx cancer is a malignant tumor that develops in the larynx, commonly known as the voice box, which plays a central role in breathing, speaking, and protecting the airway during swallowing. Most laryngeal cancers are squamous cell carcinomas arising from the lining of the larynx. The disease is strongly associated with tobacco and alcohol exposure and is more common in adults over the age of 50. Early-stage larynx cancer is often highly treatable, while advanced disease requires complex, multidisciplinary management to balance cancer control with preservation of voice and airway function.
Causes
Larynx cancer develops after prolonged exposure to factors that damage the cells lining the larynx and lead to malignant transformation.
- Tobacco use: Cigarette smoking is the strongest risk factor; cigars, pipes, and smokeless tobacco also increase risk
- Alcohol consumption: Heavy alcohol use significantly increases risk, particularly when combined with tobacco
- Human papillomavirus (HPV): May play a role in a subset of cases, though less commonly than in oropharyngeal cancer
- Occupational exposures: Inhalation of chemicals such as asbestos, wood dust, or industrial fumes
- Chronic laryngeal irritation: Long-standing reflux or inflammation may contribute in some individuals
- Prior head and neck cancer: Increases the risk of developing a second primary tumor
Symptoms
Symptoms depend on the part of the larynx involved and the extent of disease. Early symptoms are often subtle, especially when tumors arise on the vocal cords.
- Persistent hoarseness or voice changes (one of the most common early signs)
- Sore throat or throat pain that does not resolve
- Difficulty swallowing or pain with swallowing
- Sensation of a lump in the throat
- Ear pain referred from the throat
- Chronic cough or coughing up blood
- Shortness of breath or noisy breathing in advanced cases
- Neck mass due to lymph node involvement
Any voice change lasting more than several weeks warrants further evaluation.
Diagnosis
Diagnosis involves careful examination of the larynx and assessment of tumor extent.
- Comprehensive head and neck examination: Including assessment of voice and airway
- Flexible laryngoscopy: Direct visualization of the larynx using a fiberoptic scope
- Biopsy: Tissue sampling to confirm malignancy and tumor type
- Imaging studies: Computed tomography or magnetic resonance imaging to evaluate local invasion and lymph node involvement
- Positron emission tomography: Used in select cases to assess regional or distant spread
Accurate staging is essential for selecting the most appropriate treatment strategy.
Treatment Options
Treatment depends on tumor location, stage, vocal cord mobility, and overall health. Management often involves a multidisciplinary team.
- Radiation therapy: Commonly used for early-stage cancers to preserve voice function
- Endoscopic or partial laryngeal surgery: Allows removal of the tumor while maintaining speech and swallowing in select cases
- Chemoradiation: Used for advanced disease when organ preservation is feasible
- Total laryngectomy: Required for some advanced or recurrent cancers, resulting in a permanent airway through a neck stoma
- Neck dissection: Performed when cancer has spread to cervical lymph nodes
- Rehabilitation: Speech and swallowing therapy, including voice restoration after laryngectomy
Treatment planning emphasizes both oncologic control and long-term functional outcomes.
When to See a Specialist
Evaluation by a head and neck specialist is recommended for persistent hoarseness, throat pain, difficulty swallowing, or a neck mass lasting more than two to three weeks. Early diagnosis improves treatment success and increases the likelihood of preserving voice, swallowing, and airway function.