Tongue cancer is a type of oral cancer in which malignant cells grow in the tissues of the tongue. Over 90% of these cancers are squamous cell carcinomas, meaning they start in the thin, flat cells lining the tongue’s surface. It can develop in two distinct locations, each with different behavior and outlook, and catching it early makes a dramatic difference in survival.
Two Types Based on Location
The tongue has two anatomically separate regions, and where the cancer forms changes how it’s classified and treated. The oral tongue covers the front two-thirds, including the top surface, the sides, and the underside. This is the part you can see when you stick your tongue out. Cancer here is classified as an oral cavity cancer.
The base of the tongue sits farther back, behind the row of larger taste buds (circumvallate papillae) near your throat. Cancer in this area is classified as an oropharyngeal cancer. Base-of-tongue cancers are harder to spot because you can’t easily see or feel them. In one study, 66% of patients with base-of-tongue squamous cell carcinoma were already at an advanced stage (stage III or IV) by the time they were diagnosed. Patients with oral tongue cancer generally have better overall survival than those with base-of-tongue cancer, largely because of this detection gap.
What Tongue Cancer Looks and Feels Like
The earliest visible signs often appear as unusual patches on the tongue’s surface. A white patch (leukoplakia) or a red patch (erythroplakia) that doesn’t go away within two to three weeks deserves attention. Red patches are considered especially concerning. They typically look bright or fiery red with a velvety or granular texture, sit slightly lower than the surrounding tissue, and have sharp, well-defined borders. That sharp border is a key distinguishing feature: redness from irritation or infection almost always has blurry, diffuse edges.
As the condition progresses, you may notice a sore or lump on the tongue that doesn’t heal, pain or a burning sensation, difficulty swallowing, or a feeling of something stuck in your throat. If a patch or sore on the tongue feels firm or hard when you press on it, that firmness (called induration) suggests the cancer may have grown deeper into the tissue. Numbness in part of the tongue or persistent ear pain on one side can also occur.
Causes and Risk Factors
Tobacco use is the single strongest risk factor. Current smokers face roughly 2.7 times the risk of developing tongue cancer compared to people who have never smoked, and the risk climbs with the number of cigarettes smoked per day and total lifetime pack-years. Former smokers still carry an elevated risk (about 2.2 times), though quitting does reduce it over time.
Heavy alcohol use, particularly drinking spirits five or more days a week, adds to the risk. When combined with smoking, the two appear to amplify each other’s effects rather than simply adding together.
Human papillomavirus (HPV) infection, particularly HPV-16, has become an increasingly important cause, especially for cancers at the base of the tongue. Rates of oropharyngeal cancer have been rising steadily since the mid-2000s, largely driven by HPV-linked cases. HPV-positive tongue cancers tend to behave differently from HPV-negative ones, generally responding better to treatment and carrying a more favorable prognosis. Other risk factors include chewing betel nut (common in parts of Asia), poor oral hygiene, and chronic irritation from rough teeth or ill-fitting dentures.
How It’s Diagnosed
Diagnosis starts with a physical exam of your mouth and throat. Your doctor or dentist will look for visible lesions, feel for lumps or hard areas, and check the lymph nodes in your neck. If anything looks suspicious, a biopsy is the definitive next step. A small sample of tissue is removed and examined under a microscope to confirm whether cancer cells are present.
Once cancer is confirmed, imaging helps determine how far it has spread. CT scans and MRI are the standard tools for evaluating the tumor’s size and whether it has reached nearby lymph nodes. Ultrasound, sometimes combined with a fine-needle aspiration (where a thin needle draws cells from a lymph node), provides additional detail about the neck. PET scans, which detect areas of high metabolic activity throughout the body, may be used to check for distant spread.
Survival Rates by Stage
How early the cancer is caught is the single biggest factor in outcomes. National Cancer Institute data from 2015 to 2021 shows clear differences in five-year relative survival based on stage at diagnosis:
- Localized (still confined to the tongue): 87.6%
- Regional (spread to nearby lymph nodes): 69.9%
- Distant (spread to other parts of the body): 39.1%
These numbers underscore why paying attention to persistent sores, patches, or lumps on the tongue matters so much. The gap between localized and distant survival is nearly 50 percentage points.
Treatment and What to Expect
Treatment depends on the tumor’s size, location, and stage. Surgery is the primary approach for most oral tongue cancers. A glossectomy removes part or all of the tongue: a partial glossectomy takes only the affected section, while a subtotal or total glossectomy removes most or all of it. When a significant portion of the tongue is removed, surgeons reconstruct it using tissue flaps taken from other parts of the body, such as the chest or arm, to preserve as much function as possible. Lymph nodes in the neck are often removed at the same time (neck dissection) to check for or eliminate spread.
Radiation therapy is frequently used after surgery, particularly for larger tumors or when cancer has reached the lymph nodes. For base-of-tongue cancers, radiation (often combined with chemotherapy) may be the primary treatment rather than surgery, especially for HPV-positive cases that tend to respond well to this approach.
Recovery: Speech and Swallowing
The tongue is central to speaking, swallowing, and tasting, so rehabilitation after treatment is a significant part of the journey. Patients typically work with a speech-language pathologist for three to six months following surgery. Therapy focuses on voice quality, articulation, speech rate, and intelligibility, progressing through structured exercises from sustained vowel sounds to full conversational speech.
Swallowing recovery follows its own timeline. Some patients can eat soft foods by mouth shortly after surgery, while others initially need a feeding tube and gradually transition through liquids, thick liquids, and soft foods before returning to a normal diet. The extent of the surgery largely determines where a person starts. Those who had a smaller portion of the tongue removed generally regain near-normal speech and swallowing, while those who had more extensive surgery face a longer rehabilitation with more adaptation required.
Many cancer centers now offer multidisciplinary teams that coordinate surgery, radiation, and rehabilitation from the start, which helps patients understand what recovery will look like before treatment even begins.