Definition Causes Symptoms Stages and Treatment of Mouth Cancer
Cancer is referred to as the uncontrollable growth of cells which invade and cause damage to the surrounding tissue. Mouth cancer, also called as oral cancer, is where the tumour develops in any part of the mouth. It can be either on the surface of the tongue or the inside of the cheeks, or the roof of the mouth called palate, or the lips or the gums. Tumours can also tend to develop in the glands which produce saliva, in the tonsils at the back of the mouth, and in the part of the throat which is connecting your mouth to your windpipe or pharynx. However, these are much less common. Mouth cancer is amongst the most several types of cancers which is grouped in a category known as the head and neck cancers. Mouth cancer and the other head and neck cancers are generally treated similarly. Oral cancer generally occurs in the people over the age of 40 and affects more than about twice as many men as women. Most oral cancers are related to tobacco use, alcohol use or both, or an infection caused by the human papillomavirus (HPV). In this article, we will study what is mouth cancer, mouth cancer causes, what are the symptoms of mouth cancer, and oral cancer reasons.
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Mouth Cancer Causes
Let us first learn about the mouth cancer reasons in detail. Given below are the mouth cancer causes.
Tobacco and Alcohol usage: Tobacco usage of any kind, which includes cigarette smoking, puts you at a higher risk of developing oral cancers. Heavy alcohol usage also increases the oral cancer risk. Using both tobacco and alcohol increases the risk of developing cancer even further.
HPV: An Infection with the sexually transmitted human papillomavirus, especially the HPV 16 type is linked to oral cancers.
Age: The risk to develop oral cancer increases with age. Oral cancers quite often develop in people that are over the age of 40.
Sun Exposure: Cancer of the lip may be caused due to the sun exposure as well.
What are the Symptoms of Mouth Cancer?
The most common symptoms of mouth cancer are given as follows:
Swellings or thickenings, lumps or bumps, rough spots or crusts or eroded areas found on the lips, gums, or several other areas inside the mouth
The development of a velvety white, red, or speckled white and red coloured patches inside the mouth
An unexplained bleeding inside the mouth
An unexplained numbness, or loss of any feeling, or pain or tenderness in any of the areas of the mouth, face or neck.
Developing persistent sores on the mouth, face, or neck, which bleed easily and do not heal within a span of 2 weeks
Soreness or feeling that something is trapped in the back of your throat
Difficulty in chewing or swallowing, difficulty in speaking, or even moving your jaw or tongue
Hoarseness in voice, chronic sore throat, or a change in voice
Pain in the ears
A change in the way the teeth or the dentures fit together
Drastic weight loss
Oral Cancer Diagnosis
Since oral cancer can be spread quickly, early detection is very important. An oral cancer examination can be able to detect any early signs of cancer. The examination is painless and takes only a couple of minutes. Many dentists will also perform this test at the time of your regular dental check-ups.
During this exam, your dentist or the dental hygienist will examine your face, lips, neck and the entire mouth for any possible signs of cancer.
Oral Cancer Treatment
There are usually three main treatment options that are available for mouth cancer. These include the following:
Surgery for removing the cancerous cells, along with the tiny bit of the surrounding normal tissue or cells for ensuring that the cancer is completely removed
Radiotherapy wherein the beams of radiation are targeted at the cancerous cells
Chemotherapy wherein the powerful medicines are used for killing the cancerous cells
These treatments are used in a combination many times. For example, the surgery might be followed by the course of the radiotherapy to help in preventing the cancer from returning.
Apart from trying to cure the mouth cancer, the treatment will also focus on preserving the important functions of the mouth, such as breathing, eating, and speaking. Maintaining the appearance of your mouth would also be of a high priority.
FAQs on What Is Mouth Cancer in Human Biology
1. What is mouth cancer?
Mouth cancer is a type of oral cancer that develops in the tissues of the mouth due to uncontrolled growth of abnormal cells. It commonly affects the lips, tongue, cheeks, floor of the mouth, hard palate, and gums. Most mouth cancers are classified as squamous cell carcinoma, arising from the flat cells lining the oral cavity.
2. What are the early signs and symptoms of mouth cancer?
The early signs of mouth cancer include persistent sores, lumps, or patches in the mouth that do not heal. Common symptoms include:
- A mouth ulcer lasting more than 2–3 weeks
- Red or white patches (erythroplakia or leukoplakia)
- Pain or difficulty swallowing
- A lump in the cheek or neck
- Loose teeth without dental cause
Early detection significantly improves treatment outcomes.
3. What causes mouth cancer?
Mouth cancer is primarily caused by genetic mutations in oral cells triggered by harmful exposures. Major risk factors include:
- Tobacco use (smoking or chewing)
- Excessive alcohol consumption
- Infection with human papillomavirus (HPV)
- Prolonged sun exposure (for lip cancer)
- Poor oral hygiene
These factors damage DNA in oral epithelial cells, leading to uncontrolled cell division.
4. How does mouth cancer develop?
Mouth cancer develops when normal oral epithelial cells accumulate DNA mutations that cause uncontrolled growth. The process occurs in stages:
- DNA damage in squamous epithelial cells
- Formation of precancerous lesions like leukoplakia
- Uncontrolled cell division forming a tumor
- Possible invasion into nearby tissues and lymph nodes
If untreated, it can spread (metastasize) to other parts of the body.
5. What are the different types of mouth cancer?
The most common type of mouth cancer is squamous cell carcinoma, but other types exist. These include:
- Squamous cell carcinoma – arises from lining cells of the mouth
- Adenocarcinoma – develops from minor salivary glands
- Melanoma – originates from pigment-producing cells
- Lymphoma – begins in lymphatic tissue within the oral cavity
Squamous cell carcinoma accounts for the majority of oral cancer cases.
6. Where does mouth cancer usually start?
Mouth cancer usually starts in the squamous cells lining the oral cavity. Common sites include:
- The tongue
- The floor of the mouth
- The inner lining of the cheeks
- The gums
- The lips
These areas are frequently exposed to carcinogens like tobacco and alcohol.
7. Is mouth cancer curable?
Mouth cancer is often curable if detected and treated early. Treatment options include:
- Surgery to remove the tumor
- Radiation therapy
- Chemotherapy
- Targeted therapy
Early-stage oral cancer has a significantly higher survival rate compared to advanced stages.
8. How is mouth cancer diagnosed?
Mouth cancer is diagnosed through clinical examination and confirmation by biopsy. The diagnostic process includes:
- Physical examination of the oral cavity
- Imaging tests like CT scan or MRI
- Removal of tissue sample for histopathological analysis
A biopsy confirms whether abnormal cells are cancerous.
9. What is the difference between mouth cancer and throat cancer?
Mouth cancer affects the oral cavity, while throat cancer affects the pharynx or larynx. Key differences include:
- Mouth cancer occurs in lips, tongue, gums, or cheeks
- Throat cancer develops in the back of the throat or voice box
- Symptoms of throat cancer often include voice changes and persistent cough
Both are types of head and neck cancers but involve different anatomical regions.
10. Can mouth cancer be prevented?
Mouth cancer risk can be reduced by avoiding major risk factors and maintaining oral health. Preventive measures include:
- Avoiding tobacco products
- Limiting alcohol consumption
- Receiving the HPV vaccine
- Practicing good oral hygiene
- Regular dental check-ups for early screening
Prevention and early detection are key to lowering the incidence of oral cancer.
