Larynx cancer
| Laryngeal cancer | |
|---|---|
 |
|
| Larynx cancer - endoscopic view | |
| Classification and external resources | |
| Specialty | Oncology |
| ICD-10 | C32 |
| ICD-9-CM | 161 |
| Patient UK | Laryngeal cancer |
| MeSH | D007822 |
Laryngeal cancer, also known as cancer of the larynx or laryngeal carcinoma, are mostly squamous cell carcinomas, reflecting their origin from the skin of the larynx.
Cancer can develop in any part of the larynx, but the cure rate is affected by the location of the tumour. For the purposes of tumour staging, the larynx is divided into three anatomical regions: the glottis (true vocal cords, anterior and posterior commissures); the supraglottis (epiglottis, arytenoids and aryepiglottic folds, and false cords); and the subglottis.
Most laryngeal cancers originate in the glottis. Supraglottic cancers are less common, and subglottic tumours are least frequent.
Laryngeal cancer may spread by direct extension to adjacent structures, by metastasis to regional cervical lymph nodes, or more distantly, through the blood stream. Distant metastases to the lung are most common. In 2013 it resulted in 88,000 deaths up from 76,000 deaths in 1990.Five year survival rates in the United States are 60%.
The symptoms of laryngeal cancer depend on the size and location of the tumour. Symptoms may include the following:
Treatment effects can include post-operative changes in appearance, difficulty eating, or loss of voice that may require learning alternate methods of speaking.
Smoking is the most important risk factor for laryngeal cancer. Death from laryngeal cancer is 20 times more likely for heaviest smokers than for nonsmokers. Heavy chronic consumption of alcohol, particularly alcoholic spirits, is also significant. When combined, these two factors appear to have a synergistic effect. Some other quoted risk factors are likely, in part, to be related to prolonged alcohol and tobacco consumption. These include low socioeconomic status, male sex, and age greater than 55 years.
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