Treatment for malignant tongue cancer aims to eliminate cancer cells, control symptoms, and preserve essential functions like speaking, eating, and swallowing. The approach depends on the size and location of the tumor, whether it affects the front or base of the tongue, and how far the disease has spread. Medical teams combine established therapies with emerging treatments being tested in clinical trials.

How Treatment Choices Are Made

When someone receives a diagnosis of tongue cancer without a specified stage, doctors must first determine how far the disease has progressed before creating a treatment plan. The stage describes the size of the tumor and whether cancer cells have spread to lymph nodes in the neck or to other parts of the body. This information shapes every decision about which therapies to use and in what order.^[1]

Treatment planning also considers where exactly the cancer sits on the tongue. The front two-thirds of the tongue, called the oral tongue, is treated differently from the back third, known as the base of the tongue. Cancers in the front portion are usually easier to spot early because doctors and dentists can see them during examinations. Base of tongue cancers often grow without causing noticeable symptoms until they become larger or spread to lymph nodes.^[2]

The patient’s overall health, age, and ability to tolerate certain treatments play an important role. For example, someone with other serious medical conditions might not be a good candidate for lengthy surgery or aggressive chemotherapy. Doctors also think about the impact of treatment on daily life, including the ability to eat solid food, speak clearly, and maintain nutrition. In some cases, patients may need temporary feeding tubes or breathing tubes to support recovery.^[3]

Standard Treatment Approaches

Surgery as Primary Treatment

Surgery remains the most common first-line treatment for many tongue cancers. The operation, called a glossectomy, involves removing the tumor along with a margin of healthy tissue around it. This margin acts as a safety buffer to ensure no cancer cells are left behind. For small, early-stage tumors confined to one area, surgeons may remove only a portion of the tongue in a partial glossectomy. When cancer is extensive, a total glossectomy removes the entire tongue.^[4]

The extent of surgery depends on how deeply the tumor has invaded the tongue tissue. Research shows that tumors deeper than 5 millimeters carry a higher risk of spreading to lymph nodes, which influences surgical planning. Surgeons often check nearby lymph nodes during the same operation. They may perform a sentinel lymph node biopsy, removing just one or two nodes to test for cancer spread, or a more extensive neck dissection to remove multiple lymph node groups if cancer has clearly moved beyond the tongue.^[3]

Some patients require reconstructive surgery after tumor removal. Surgeons use tissue from other parts of the body, such as the forearm or thigh, to rebuild the tongue. This flap reconstruction helps restore function and appearance. Recovery from tongue surgery typically involves a hospital stay of 10 days to two weeks, with longer stays needed when reconstruction is performed. Patients often face challenges with speech and swallowing during recovery, requiring support from specialized therapists.^[10]

Radiation Therapy

Radiation therapy uses high-energy beams to destroy cancer cells. It can be the primary treatment for people who cannot undergo surgery due to health reasons, or it may be used after surgery to kill any remaining cancer cells. This post-surgical radiation is called adjuvant radiotherapy. It is particularly important when the tumor was large, had invaded deeply, or when surgeons could not remove all visible cancer with safe margins.^[9]

Radiation for tongue cancer typically runs for about six weeks, with treatments given five days per week. The radiation oncologist carefully targets the tumor area and often includes nearby lymph nodes in the treatment field, especially if there is risk of hidden cancer spread. Modern techniques allow doctors to focus the radiation beam precisely, reducing damage to surrounding healthy tissue like salivary glands and jawbone.^[10]

Side effects from radiation to the mouth and throat can be significant. Many patients develop mucositis, a painful inflammation and ulceration of the mucous membranes lining the mouth and throat. This makes eating and drinking uncomfortable. Xerostomia, or severe dry mouth, occurs when radiation damages salivary glands, reducing saliva production. This condition often persists long after treatment ends. Other side effects include changes in taste, difficulty swallowing (dysphagia), and increased risk of dental problems. Some patients develop stiffness in the jaw muscles, making it hard to open the mouth fully.^[12]

Chemotherapy

Chemotherapy uses drugs to kill rapidly dividing cancer cells throughout the body. In tongue cancer treatment, chemotherapy is rarely used alone. Instead, it is combined with radiation therapy in what doctors call chemoradiation or concurrent chemoradiotherapy. This combination is standard for advanced-stage cancers that are large or have spread to lymph nodes.^[10]

The most commonly used chemotherapy drugs for tongue cancer are platinum-based agents, particularly cisplatin. Cisplatin makes cancer cells more sensitive to radiation, improving treatment effectiveness. Patients typically receive cisplatin intravenously once every three weeks during the six-week radiation course. Alternative schedules involve weekly smaller doses. Another platinum drug, carboplatin, may be used in patients who cannot tolerate cisplatin due to kidney problems or hearing loss.^[12]

Chemotherapy adds side effects beyond those of radiation alone. Common problems include nausea and vomiting, though modern anti-nausea medications control these symptoms better than in the past. Platinum drugs can damage kidneys, so patients need regular blood tests to monitor kidney function. Hearing loss and ringing in the ears (tinnitus) are potential long-term side effects. Chemotherapy temporarily lowers blood cell counts, increasing the risk of infections, anemia, and bleeding. Fatigue is nearly universal during combined chemoradiation.^[13]

Treatment Being Tested in Clinical Trials

Targeted Therapy with Cetuximab

Scientists have developed drugs that attack specific molecules involved in cancer growth. One such drug, cetuximab, targets the epidermal growth factor receptor (EGFR), a protein found on the surface of many tongue cancer cells. EGFR helps cells grow and divide. When cetuximab binds to this receptor, it blocks signals that tell cancer cells to multiply.^[12]

Clinical trials have tested cetuximab in combination with radiation therapy for patients with advanced tongue and other head and neck cancers. The drug is given intravenously once weekly throughout the radiation treatment course. In some trials, cetuximab has been combined with platinum-based chemotherapy instead of or alongside radiation. This approach offers an alternative for patients who cannot tolerate traditional platinum chemotherapy due to kidney problems or other health issues.^[21]

While cetuximab works through a different mechanism than chemotherapy, it still causes side effects. The most distinctive is a skin rash that looks like acne, appearing mainly on the face, chest, and back. This rash can be itchy and uncomfortable. Other side effects include allergic infusion reactions, diarrhea, and electrolyte imbalances. Interestingly, patients who develop a worse rash sometimes have better cancer outcomes, suggesting the rash may indicate the drug is working.^[12]

Immunotherapy Drugs

A newer class of cancer treatments helps the body’s own immune system recognize and attack cancer cells. Normally, cancer cells produce proteins that act like “brakes” on immune cells, preventing the immune system from destroying the tumor. Drugs called immune checkpoint inhibitors release these brakes, allowing immune cells to fight cancer more effectively.^[21]

Two immunotherapy drugs, pembrolizumab and nivolumab, have been studied in clinical trials for tongue cancer, particularly for the squamous cell carcinoma type, which accounts for most tongue cancers. These drugs block a checkpoint protein called PD-1 on immune cells, which restores the immune system’s ability to attack cancer. They are given by intravenous infusion every two to three weeks.^[10]

Early clinical trials have focused on patients with advanced tongue cancer that has spread to distant organs or come back after initial treatment. In these difficult-to-treat situations, immunotherapy has shown promise in shrinking tumors and extending survival for some patients. Researchers are now testing whether these drugs work better when combined with chemotherapy or radiation, and whether they can help patients with earlier-stage disease.^[12]

Immunotherapy side effects differ from those of chemotherapy or radiation. Because these drugs activate the immune system broadly, they can cause immune-related adverse events where the immune system attacks normal body tissues. Common problems include skin rashes, diarrhea and intestinal inflammation (colitis), liver inflammation, and underactive thyroid gland. In rare cases, the immune system may attack the lungs, kidneys, or other organs. Most immune-related side effects are manageable with medications that suppress immune activity, such as corticosteroids.^[21]

Treatment De-escalation Studies

Many clinical trials are exploring whether patients with certain types of tongue cancer might achieve good outcomes with less intensive treatment, potentially reducing side effects and improving quality of life. This approach, called treatment de-escalation, focuses particularly on cancers associated with human papillomavirus (HPV), a virus that can cause tongue cancer, especially at the base of the tongue.^[12]

HPV-associated tongue cancers tend to respond better to treatment and have better survival rates than cancers caused by tobacco and alcohol. Because these patients often do well with standard treatment, researchers are testing whether they might benefit from lower radiation doses, fewer chemotherapy cycles, or surgery alone without radiation. The goal is to cure the cancer while causing less damage to swallowing, taste, and saliva production.^[12]

These trials are typically Phase II or Phase III studies. Phase II trials involve 50 to 100 patients and test whether a reduced treatment approach seems to work well enough to justify further study. Phase III trials are larger, often involving hundreds of patients, and directly compare the de-escalated treatment against standard treatment to see if outcomes are truly similar. Patients in these trials are carefully selected based on characteristics that suggest their cancer will respond well to less intensive therapy.^[12]

Novel Drug Combinations

Researchers continue to test new combinations of existing drugs to see if mixing therapies in different ways improves outcomes. Some trials combine targeted therapy drugs with immunotherapy, reasoning that blocking EGFR might make tumors more visible to the immune system. Other studies test whether adding immunotherapy to standard chemoradiation improves cure rates without making side effects unbearable.^[12]

Clinical trials are conducted in phases that test different aspects of a new treatment. Phase I trials are small studies, usually involving 20 to 40 patients, focused primarily on safety. Researchers gradually increase the dose to find the highest amount that can be given without causing severe side effects. Phase II trials enroll more patients to see if the treatment actually shrinks tumors or improves outcomes. Phase III trials compare the new approach directly with current standard treatment to determine if it is better, equivalent, or worse.^[14]

Many clinical trials for tongue cancer are conducted at major cancer centers in the United States, Europe, and other regions. Patients interested in participating must meet specific eligibility criteria, which might include having a certain cancer stage, having already tried standard treatments, or having specific tumor characteristics like HPV positivity. Clinical trial participants receive close monitoring and often have access to treatments before they become widely available.^[12]

Most common treatment methods

• Surgery (Glossectomy)
  • Partial glossectomy for smaller, localized tumors confined to one area of the tongue
  • Total glossectomy for extensive cancers requiring removal of the entire tongue
  • Sentinel lymph node biopsy to test one or two lymph nodes for cancer spread
  • Neck dissection to remove multiple lymph node groups when cancer has spread
  • Flap reconstruction using tissue from the forearm or thigh to rebuild the tongue after removal
• Radiation Therapy
  • Primary radiation for patients unable to undergo surgery due to health conditions
  • Adjuvant radiation after surgery to eliminate remaining cancer cells
  • Six-week treatment course with daily sessions five days per week
  • Targeted radiation to tumor area and nearby lymph nodes
• Chemotherapy
  • Platinum-based drugs, particularly cisplatin, given every three weeks or weekly
  • Carboplatin as alternative for patients with kidney problems
  • Combined with radiation (chemoradiation) for advanced-stage cancers
  • Used to make cancer cells more sensitive to radiation treatment
• Targeted Therapy
  • Cetuximab targeting epidermal growth factor receptor (EGFR) on cancer cells
  • Given intravenously once weekly during radiation treatment
  • Combined with platinum chemotherapy or radiation in clinical trials
  • Alternative for patients who cannot tolerate traditional chemotherapy
• Immunotherapy
  • Pembrolizumab and nivolumab blocking PD-1 checkpoint protein
  • Administered by intravenous infusion every two to three weeks
  • Used for squamous cell carcinoma that is advanced or recurrent
  • Being tested in combination with chemotherapy and radiation in clinical trials

Managing Treatment Side Effects and Recovery

Tongue cancer treatment affects fundamental abilities like eating, speaking, and producing saliva. Many patients work with a team of specialists including speech and language therapists, dietitians, and dentists to manage these challenges. Speech therapists help patients adapt to changes in tongue movement and shape, teaching exercises to strengthen remaining tongue muscles and improve pronunciation. These exercises can benefit even patients who have had a total glossectomy with reconstruction.^[10]

Nutrition becomes a major concern during and after treatment. Radiation-induced mucositis makes the mouth and throat too painful for regular eating. Patients may need liquid or pureed diets, high-calorie nutritional supplements, or feeding through a tube placed into the stomach. Dietitians help ensure patients receive adequate protein and calories to support healing and maintain strength. Some patients lose significant weight during treatment, which can delay recovery and affect overall health.^[19]

Dry mouth from radiation damage to salivary glands persists for many patients. Saliva is essential for tasting food, beginning digestion, protecting teeth from decay, and making speech clear. Without adequate saliva, patients experience constant thirst, difficulty swallowing dry foods, changes in taste, and increased dental cavities. Management includes sipping water frequently, using artificial saliva products, sucking on sugar-free candies to stimulate remaining saliva flow, and meticulous dental care with fluoride treatments.^[17]

The physical and emotional impact of treatment requires comprehensive support. Many patients feel anxious or depressed about changes in appearance and function, especially if surgery has significantly altered the tongue. Support groups connect patients with others facing similar challenges. Mental health professionals help patients cope with the psychological burden of cancer diagnosis and treatment. Social workers assist with practical matters like managing time off work, transportation to appointments, and accessing financial assistance programs.^[17]

Treatment Selection Based on Tumor Location

The difference between oral tongue cancer (front two-thirds) and base of tongue cancer (back third) significantly affects treatment decisions. Oral tongue tumors are usually detected earlier because they cause symptoms like visible lumps or sores, and dentists can spot them during routine dental checkups. These cancers are often treated with surgery as the first step, especially when caught early, followed by radiation if needed.^[5]

Base of tongue cancers behave differently. They often grow without symptoms until they become large or spread to neck lymph nodes. Patients might notice throat pain, difficulty swallowing, ear pain, or the sensation of something stuck in the throat. Because these symptoms have many possible causes, diagnosis may be delayed. By the time base of tongue cancer is diagnosed, it has often spread to lymph nodes. Treatment typically involves either chemoradiation or surgery with post-operative radiation, with the choice depending on tumor size and extent of spread.^[10]

Base of tongue cancers are more frequently associated with HPV infection, particularly in younger patients who have never smoked. HPV-positive tumors generally respond better to treatment and have better survival rates. This has led researchers to investigate whether these patients might benefit from less intensive treatment approaches in clinical trials, as discussed earlier. Testing tumor tissue for HPV is now standard practice because it helps guide treatment decisions and predict outcomes.^[13]

Duration and Intensity of Treatment

The timeline for tongue cancer treatment varies widely based on the approach used. Surgery alone, for small early-stage tumors, might involve a single operation followed by several weeks of recovery. Hospital stays range from a few days for simple procedures to two weeks or more when extensive reconstruction is needed. Patients typically need several weeks at home to heal before returning to normal activities.^[10]

When radiation or chemoradiation is part of the plan, treatment extends over six to seven weeks. Patients come to the cancer center five days per week for radiation sessions, each lasting 15 to 30 minutes. Side effects accumulate gradually, becoming most severe toward the end of treatment and in the weeks immediately after completion. Full recovery from radiation side effects can take months, with some effects like dry mouth potentially lasting years or becoming permanent.^[9]

Patients receiving combined approaches, such as surgery followed by chemoradiation, face the longest treatment course. Surgery and initial recovery might take two to three months, followed by a six-week chemoradiation course starting several weeks after surgery to allow surgical wounds to heal. The entire treatment and recovery process can span six months to a year, with gradual improvement in function continuing for a year or more beyond that.^[10]

Factors Affecting Treatment Decisions

Beyond cancer stage and location, several other factors influence which treatment strategy doctors recommend. The patient’s age and overall physical condition matter greatly. Younger, otherwise healthy patients can usually tolerate more aggressive treatment, including extensive surgery and high-dose chemoradiation. Older patients or those with heart disease, lung disease, or other serious health problems may need gentler approaches, even if these are theoretically less effective, because they cannot safely undergo major surgery or intensive chemotherapy.^[3]

Previous treatments also affect options. Patients who have had radiation to the head and neck for another cancer often cannot receive full-dose radiation again to the same area because of cumulative damage to normal tissues. For these patients, surgery might be the only option, even for cancers that would normally be treated with radiation. Similarly, patients with significant kidney disease cannot receive cisplatin chemotherapy and need alternative drugs.^[12]

The patient’s priorities and values play an important role in treatment selection, particularly when different approaches offer similar cure rates but different side effects. Some patients prioritize avoiding surgery if possible to maintain tongue anatomy, even if radiation causes long-term dry mouth. Others prefer surgery and shorter recovery time, accepting changes in speech and swallowing over the prolonged side effects of radiation. Doctors discuss these trade-offs extensively with patients to ensure treatment aligns with individual goals and concerns.^[13]