Overview
Head and neck cancers originate within the head and neck region, encompassing various types of cancerous growths. These cancers typically initiate as abnormal cell growths capable of infiltrating and damaging healthy tissues.
Primarily, head and neck cancer pertains to malignancies emerging in the oral cavity, throat, sinuses, and salivary glands. Nonetheless, additional cancers within this vicinity are sometimes categorized similarly.
Rather than being a singular diagnosis, head and neck cancer represents a group of cancers sharing certain characteristics. Many of these cancers, for instance, share common risk factors and treatment approaches. Predominantly, they stem from squamous cells, which form the skin’s outer layer and line the inner regions of the nose, mouth, and throat, leading to the classification of squamous cell carcinomas. Although less frequent, cancers originating from other cell types within the head and neck area also exist.
The choice of treatment for head and neck cancer depends on numerous factors, including the cancer’s location, size, cell type, and the patient’s overall health. Treatment modalities may encompass surgical procedures, radiation therapy, chemotherapy, and other interventions
Symptoms
Symptoms of head and neck cancer can encompass a mouth sore and discomfort during swallowing, with variations depending on the cancer’s point of origin. This category of cancers encompasses malignancies originating in the mouth, throat, sinuses, and salivary glands.
Signs and symptoms within the mouth and throat:
- A neck lump that may be palpable through the skin, usually not accompanied by pain.
- Persistent mouth soreness resistant to healing.
- Blood in cough.
- Hoarseness in voice.
- Teeth mobility.
- Swallowing discomfort.
- Nosebleeds.
- Stuffy or blocked nose that doesn’t go away.
Causes
The exact causes of head and neck cancers remain uncertain to experts, with potential factors varying depending on the cancer’s site of origin. These cancers encompass malignancies starting in the mouth, throat, sinuses, and salivary glands.
Generally, head and neck cancer initiates when a cell within this region undergoes DNA alterations. DNA contains the instructions governing cellular functions, including growth, multiplication, and programmed cell death. In healthy cells, DNA regulates these processes at a controlled pace. However, in cancerous cells, DNA mutations lead to aberrant instructions, prompting rapid cell proliferation and prolonged survival, resulting in excessive cell accumulation.
Risk factors
In general, things that increase the risk of head and neck cancers include:
- Tobacco use: Consumption of any form of tobacco elevates the likelihood of various types of head and neck cancer, including cigarettes, cigars, pipes, chewing tobacco, and snuff.
- Alcohol consumption: Regular and excessive alcohol intake heightens the risk of developing several forms of head and neck cancer.
- Human papillomavirus (HPV) exposure: HPV, a common sexually transmitted virus, can induce cellular changes leading to various cancers, with many instances of throat cancer attributed to HPV infection. While HPV resolves spontaneously in most cases without causing harm, it can pose a risk for certain individuals.
- Inhalation of airborne chemicals: Exposure to environmental chemicals increases the risk of nasal and sinus cancers, with both household and occupational exposures contributing to heightened cancer susceptibility.
Prevention
To reduce the risk of head and neck cancers, avoid smoking and moderate alcohol consumption. Additional preventive measures may vary based on the particular type of cancer. This category encompasses malignancies originating in the mouth, throat, sinuses, and salivary glands.
