Tongue cancer is a relatively rare but serious form of head and neck cancer that affects the muscular organ in the mouth responsible for taste, speech, and swallowing1 . It most commonly arises from squamous cells lining the tongue and is more frequent in people over 40 years old, with men being at higher risk2 . Early detection significantly improves survival rates, with localized tongue cancer having an 84% five-year survival rate3 . Treatment typically involves surgery, radiation, and sometimes chemotherapy, tailored to the cancer's stage and location4 .
Types of Tongue Cancer
Tongue cancer is classified based on the location of the tumor on the tongue, which affects symptoms, causes, and treatment approaches3 .
Oral Tongue Cancer
Oral tongue cancer, medically known as squamous cell carcinoma of the tongue, develops on the front two-thirds of the tongue3 . This part of the tongue is visible and movable, making early detection more feasible during routine dental or medical exams5 . Oral tongue cancer often presents with a pinkish-red sore or bump on the side of the tongue that does not heal3 . This sore may bleed easily when irritated or bitten3 . Because it is more accessible, oral tongue cancer is often diagnosed at an earlier stage than cancers located further back1 .
Oropharyngeal Tongue Cancer
Oropharyngeal tongue cancer arises in the back one-third of the tongue, located in the oropharynx—the part of the tongue extending into the throat3 . This area is harder to examine, so tumors here may grow unnoticed for longer periods5 . Early signs may include red or white patches at the back of the tongue or a sensation of something stuck in the throat3 . This type of tongue cancer is often linked to human papillomavirus (HPV) infection and tends to respond better to treatment than oral tongue cancer2 .
Signs and Symptoms
Tongue cancer may not cause noticeable symptoms in its early stages3 . As the disease progresses, common symptoms include:
- A sore, bump, or ulcer on the tongue that does not heal or go away3 .
- White (leukoplakia) or red (erythroplakia) patches on the tongue, which may indicate cancerous changes6 .
- A thickened or lumpy feeling on the tongue3 .
- Bleeding from the tongue during eating or brushing teeth3 .
- Numbness or discomfort in the tongue or mouth3 .
- A persistent feeling of something stuck in the throat3 .
- Difficulty speaking, swallowing, or chewing3 .
- Swollen lymph nodes in the neck3 .
Additional symptoms may include a burning sensation on the tongue, ear pain, bad breath, weight loss, and fatigue, especially in advanced stages1 .
Causes and Risk Factors
Tongue cancer develops when DNA damage in the cells lining the tongue causes abnormal cell growth and tumor formation7 . The exact causes of these DNA changes are not always clear, but several risk factors have been identified.
Risk Factors
- Tobacco Use: Smoking cigarettes, cigars, pipes, and using smokeless tobacco products are the leading causes of tongue cancer7 8. Tobacco causes DNA damage that leads to uncontrolled cell growth7 .
- Alcohol Consumption: Heavy and frequent alcohol use increases the risk by producing acetaldehyde, a carcinogen that accumulates in saliva and damages oral tissues7 8.
- Human Papillomavirus (HPV) Infection: Infection with high-risk HPV strains, especially HPV16, is a significant risk factor for oropharyngeal tongue cancer7 8.
- Age and Gender: Tongue cancer is more common in people over 40 and is twice as common in men, possibly due to higher rates of tobacco and alcohol use2 8.
- Poor Oral Hygiene and Nutrition: Lack of dental care and diets low in fruits and vegetables may increase risk8 .
- Other Factors: Marijuana smoking, genetic syndromes such as Fanconi anemia and dyskeratosis congenita, and chronic irritation from poorly fitting dentures may contribute to risk7 8.
Diagnosis and Staging
Diagnosis begins with a thorough physical examination of the mouth, tongue, throat, and neck to identify suspicious lesions or swollen lymph nodes3 4. A biopsy of the lesion is essential to confirm the presence of malignant cells3 . Imaging tests such as computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) scans help determine the tumor's size, location, and spread7 4.
Endoscopic examinations may be performed to assess the extent of cancer in the oral cavity, larynx, esophagus, oropharynx, and trachea7 . Ultrasound can evaluate lymph nodes in the neck2 .
Stages of Tongue Cancer
Staging describes how far the cancer has spread and guides treatment decisions. It is generally classified as:
| Stage | Description | Five-Year Survival Rate3 |
|---|---|---|
| Localized | Cancer confined to the tongue | 84% |
| Regional | Cancer spread to nearby lymph nodes or tissues | 70% |
| Distant | Cancer spread to distant body parts (e.g., lungs) | 41% |
| Sources: 3 | ||
Early-stage cancers (stage 0 to II) are often treated successfully with surgery alone, while advanced stages may require multimodal therapy1 .
Treatment Options
Treatment depends on the cancer's stage, location, and patient factors such as age and overall health3 4.
Surgery
Surgery is the primary treatment for tongue cancer and involves removing the tumor and some surrounding healthy tissue to ensure complete excision3 4. Types of surgery include:
- Glossectomy: Partial or total removal of the tongue depending on tumor size3 4.
- Neck Dissection: Removal of lymph nodes in the neck if cancer has spread or to prevent spread4 .
- Reconstructive Surgery: May be performed to restore tongue function and appearance after tumor removal4 .
Transoral robotic surgery is a minimally invasive option for tumors in hard-to-reach areas, especially the base of the tongue4 .
Radiation Therapy
Radiation therapy uses high-energy beams to kill cancer cells or shrink tumors3 4. It is often used after surgery to eliminate remaining cancer cells or as the main treatment when surgery is not feasible3 . Radiation may also be combined with chemotherapy for advanced disease4 . Side effects can include difficulty swallowing and dry mouth3 .
Chemotherapy
Chemotherapy involves drugs that kill cancer cells throughout the body4 . It may be used:
- Before surgery to shrink tumors.
- After surgery to reduce recurrence risk.
- Concurrently with radiation to enhance effectiveness.
- For advanced or metastatic cancer to control symptoms4 .
Other treatments such as targeted therapy and immunotherapy may be options in advanced cases2 .
Prevention Strategies
While not all tongue cancers are preventable, risk can be significantly reduced by:
- Avoiding tobacco products, including smoking and chewing tobacco7 .
- Limiting alcohol consumption or abstaining altogether7 .
- Receiving the HPV vaccine to protect against high-risk HPV strains7 .
- Maintaining good oral hygiene and regular dental checkups7 .
- Eating a healthy diet rich in fruits, vegetables, and whole grains while limiting processed and sugary foods7 .
Potential Complications
Tongue cancer and its treatments can lead to several complications:
- Functional Impairments: Difficulty swallowing, chewing, and speaking due to tumor effects or surgery3 .
- Speech Impairments: Trouble forming clear sounds or pronouncing words3 .
- Oral Health Issues: Dry mouth, changes in taste, and tooth loss following treatment3 .
- Cancer Recurrence: Risk of cancer returning or developing other head and neck cancers3 .
- Psychological Distress: Emotional and psychological challenges related to diagnosis and treatment3 .
Regular follow-up care is essential for early detection of recurrence and management of complications3 .
Summary and Key Points
- Tongue cancer primarily arises from squamous cells and is classified as oral tongue cancer (front two-thirds) or oropharyngeal tongue cancer (back one-third) 3.
- Early symptoms include sores or bumps on the tongue that do not heal, red or white patches, bleeding, and discomfort3 6.
- Major risk factors are tobacco use, alcohol consumption, and HPV infection7 8.
- Diagnosis involves clinical examination, biopsy, and imaging to stage the cancer3 7.
- Treatment includes surgery, radiation therapy, and chemotherapy, tailored to the cancer stage and location3 4.
- Prevention focuses on avoiding tobacco and alcohol, HPV vaccination, good oral hygiene, and a healthy diet7 .
- Complications can affect speech, swallowing, oral health, and psychological well-being3 .
| Stage | Five-Year Survival Rate3 |
|---|---|
| Localized | 84% |
| Regional | 70% |
| Distant | 41% |
| Sources: 3 | |
Frequently Asked Questions
What are the main types of tongue cancer?
There are two main types: oral tongue cancer affecting the front two-thirds of the tongue, and oropharyngeal tongue cancer affecting the back one-third near the throat3 .
What symptoms should prompt a visit to a healthcare provider?
Persistent sores, bumps, or patches on the tongue that do not heal, bleeding, numbness, difficulty swallowing or speaking, and swollen lymph nodes in the neck warrant medical evaluation3 .
How is tongue cancer diagnosed?
Diagnosis requires a physical exam, biopsy of suspicious lesions, and imaging tests such as CT, MRI, or PET scans to assess tumor size and spread3 7.
What are the treatment options for tongue cancer?
Treatment may include surgery to remove the tumor, radiation therapy to kill cancer cells, and chemotherapy to target cancer systemically, often in combination3 4.
Can tongue cancer be prevented?
While not all cases are preventable, risk can be lowered by avoiding tobacco and alcohol, getting the HPV vaccine, maintaining oral hygiene, and eating a nutritious diet7 .
