Oral Cancer Surgery

Introduction

A diagnosis of oral cancer changes the ground under your feet. The mouth is involved in nearly everything that connects you to the world — speaking, eating, swallowing, smiling, kissing, breathing. When surgery is recommended, the worry is rarely only about the cancer itself. It is also about what the mouth and face will look like and how they will work afterwards.

This guide is written for people who already have a diagnosis of oral cancer and are now planning treatment, and for family members supporting them. It explains what oral cancer surgery is, how it is performed, the different surgical approaches, what reconstruction can offer, how recovery unfolds, and how surgery fits with radiation and chemotherapy. The aim is to make the road ahead feel more understandable, even though the specifics of any one person’s treatment plan are decided in conversation with the head and neck oncology team.

Modern oral cancer surgery has changed substantially over the past two decades. Microsurgical reconstruction, function-preserving techniques, and coordinated rehabilitation mean that even after extensive surgery, many people regain meaningful speech, swallowing, and quality of life.

What Is Oral Cancer Surgery?

Oral cancer surgery is the surgical removal of cancer from the oral cavity — the part of the mouth that includes the tongue, the floor of the mouth, the inner cheeks (buccal mucosa), the gums, the hard palate (roof of the mouth), and the lips. Most oral cancers are squamous cell carcinomas, which arise from the lining of the mouth.

The aims of surgery are:

• To remove the entire tumour with a rim of healthy tissue around it (called a clear margin)
• To assess and, when needed, remove lymph nodes in the neck where oral cancers commonly spread first
• To reconstruct what has been removed, so that the mouth and face can function and look as close to normal as possible

For most people with oral cavity cancer, surgery is the primary (first) treatment. This is different from some other head and neck cancers, where radiation may be used first. Major guidelines, including those from the National Comprehensive Cancer Network (NCCN), describe surgery as the standard first treatment for resectable oral cavity squamous cell carcinoma, with radiation or chemoradiation added afterwards in many cases.

An oral cancer operation is rarely just about removing the tumour. It is usually a coordinated procedure that may include three components — tumour removal, neck dissection, and reconstruction — performed in a single sitting by a head and neck surgical oncology team.

Why Oral Cancer Surgery Is Performed

Surgery is generally the treatment of choice when the cancer is in the oral cavity and can be removed completely. The reasons for choosing surgery include:

• Best chance of local control: Complete surgical removal with clear margins gives the strongest chance of preventing the cancer from coming back in the same place.
• Accurate staging: Examining the removed tumour and lymph nodes under a microscope tells the team exactly how advanced the cancer is, which guides whether additional treatment is needed.
• Avoiding long-term radiation effects to the mouth: Radiation to the oral cavity can cause lasting dryness, difficulty swallowing, dental problems, and changes to the jawbone. When surgery alone can cure the cancer, these side effects can be avoided.
• Removing pre-cancerous and visibly diseased tissue: Surgery can address areas of high-grade dysplasia or carcinoma in situ at the same time.

Surgery is generally considered when:

• The cancer is confined to the oral cavity or has spread only to nearby lymph nodes
• The tumour is technically removable (resectable) with acceptable functional outcomes
• There is no distant spread to other organs
• The person is fit enough to undergo a major operation and anaesthesia

For very advanced tumours that cannot be removed completely, or when distant spread is present, the team may recommend chemoradiation or systemic therapy instead of, or before, surgery.

Who Is a Candidate?

The decision about who undergoes oral cancer surgery is made by a multidisciplinary tumour board — a meeting of surgical oncologists, radiation oncologists, medical oncologists, radiologists, pathologists, dentists, speech and swallowing therapists, and reconstructive surgeons. They review each case individually.

Factors considered include:

• Stage of the cancer: Stages I and II are typically treated with surgery alone. Stages III and IV are usually treated with surgery followed by radiation or chemoradiation, or sometimes with non-surgical approaches first.
• Location and size of the tumour: Where exactly the cancer sits affects what can be removed and how the mouth will function afterwards.
• Involvement of nearby structures: Whether the tumour involves the jawbone, deep tongue muscles, or major blood vessels affects the type of operation needed.
• Lymph node status: Visible or suspected lymph node involvement guides the extent of neck dissection.
• General health: Heart and lung function, nutritional state, and other medical conditions all matter for a long operation.
• Smoking and alcohol use: Continuing to smoke and drink during and after treatment significantly worsens healing and outcomes. Stopping before surgery is strongly encouraged.
• The person’s own wishes: The functional and cosmetic trade-offs of different treatments matter. These should be discussed openly with the surgical team.

Alternatives to Surgery

Although surgery is the standard first treatment for most oral cavity cancers, it is not the only option, and in some situations other treatments are used first or instead.

Radiation Therapy Alone

For very small, superficial oral cancers, radiation alone can sometimes achieve cure. It is also used when a person is not medically fit for major surgery, or when the location makes surgery very disfiguring. However, for most oral cavity cancers, current professional guidelines describe surgery as the preferred first treatment because of better local control and clearer information about the disease.

Chemoradiation

This is chemotherapy combined with radiation. It is often used for cancers of the oropharynx (the back of the throat), and may be considered for oral cavity cancers when surgery would be too extensive or when the cancer cannot be completely removed.

Induction Chemotherapy

For some borderline-resectable or locally very advanced cancers, chemotherapy may be given first to shrink the tumour before surgery or radiation. This is used selectively.

Immunotherapy and Targeted Therapy

For recurrent or metastatic disease, drugs that work with the immune system (such as immune checkpoint inhibitors) or that target specific tumour proteins are part of the treatment landscape. These are not the first treatment for most newly diagnosed, resectable oral cancers.

Active Surveillance for Pre-Cancerous Lesions

Areas of mild dysplasia or leukoplakia (white patches in the mouth) that have not yet become cancer may be watched closely with regular examinations and biopsies rather than removed immediately. Once cancer is diagnosed, however, active surveillance is not appropriate.

Whether any of these alternatives suits a specific person is a clinical decision made by the tumour board with the patient.

Surgical Approaches

Oral cancer surgery is not a single operation. The approach depends on where the cancer is, how big it is, and whether nearby structures are involved. The names below describe what is removed; many operations combine more than one of these.

Wide Local Excision

For small, superficial cancers, the surgeon removes the tumour with a margin of healthy tissue around it — typically 1 to 1.5 centimetres. This is the simplest approach and is often used for early-stage cancers of the lip, the front of the tongue, or the inner cheek.

Partial Glossectomy

Glossectomy means removal of part or all of the tongue. A partial glossectomy removes a portion of the tongue containing the cancer, with a margin of healthy tissue. For early cancers of the tongue, this can sometimes be done through the mouth without external incisions, and most people retain much of their speech and swallowing function.

Hemi-glossectomy and Total Glossectomy

A hemi-glossectomy removes half the tongue. A total glossectomy removes the entire tongue and is reserved for very extensive cancers. Both involve significant reconstruction and intensive rehabilitation. Speech and swallowing therapy is essential, and outcomes have improved with modern microvascular reconstruction.

Floor of Mouth Resection

The floor of the mouth is the soft tissue area under the tongue. Cancers here may be removed alone or together with part of the tongue or the inner jawbone.

Mandibulectomy

The mandible is the lower jawbone. Mandibulectomy is removal of part of the jawbone when the cancer involves or threatens it.

• Marginal mandibulectomy: The surgeon removes the upper rim of the jawbone while preserving the lower part. The continuity of the jaw is maintained.
• Segmental mandibulectomy: A full-thickness section of the jawbone is removed. Reconstruction with bone from elsewhere in the body (often the fibula in the lower leg) is then needed to restore the jaw.

Maxillectomy

The maxilla is the upper jawbone, which forms the roof of the mouth and the floor of the nose and sinuses. Maxillectomy is removal of part of the upper jaw and is used for cancers of the hard palate or upper gum.

• Partial maxillectomy: A limited part of the upper jaw is removed.
• Total or extended maxillectomy: A larger section is removed, sometimes including the floor of the eye socket. Reconstruction or a custom-made prosthesis (an obturator) is needed to close the opening between the mouth and nose.

Composite Resection (Commando Procedure)

When the cancer involves several structures — for example, the floor of the mouth, part of the tongue, and the jawbone — a composite resection removes all of them together as a single block of tissue. This is combined with neck dissection and reconstruction.

Lip Resection

Lip cancers are removed with a margin of healthy tissue. Reconstruction techniques have advanced to preserve mouth opening, sensation, and appearance.

Transoral Robotic Surgery (TORS)

For selected tumours at the back of the tongue or the oropharynx, a robotic system allows the surgeon to operate through the mouth with magnified, precise visualisation, avoiding external incisions in the neck or jaw. Whether this approach is suitable depends on the exact location and size of the tumour.

Neck Dissection

Oral cavity cancers commonly spread first to lymph nodes in the neck. Neck dissection — removal of lymph nodes from one or both sides of the neck — is part of the standard operation in most cases except very small, superficial tumours.

• Selective neck dissection: Only the lymph node groups most likely to be involved are removed.
• Modified radical neck dissection: A wider set of lymph nodes is removed, while important nerves, muscles, and blood vessels are preserved when possible.
• Radical neck dissection: A more extensive operation reserved for advanced nodal disease.

Even when there is no visible lymph node involvement on scans, an ‘elective’ neck dissection is often done because of the high chance of microscopic spread that imaging cannot detect.

Reconstruction

Reconstruction is usually performed at the same operation as tumour removal. The goal is to restore the shape and function of the mouth, jaw, and face. Options include:

• Primary closure: The edges of the wound are stitched directly together. This is possible for small defects.
• Skin grafts: A thin layer of skin is taken from another part of the body and placed over the wound.
• Local and regional flaps: Tissue from nearby areas (such as the chest or neck) is moved into the mouth while remaining attached to its blood supply.
• Free flaps (microvascular reconstruction): A piece of skin, muscle, and sometimes bone is taken from a distant part of the body — commonly the forearm (radial forearm flap), thigh (anterolateral thigh flap), or lower leg (fibula flap when bone is needed). The blood vessels are reconnected under a microscope to vessels in the neck. This is the gold standard for larger defects and is the basis of modern functional reconstruction.

Reconstruction does not just fill a gap. A well-chosen flap allows the tongue to move, the jaw to support teeth, the mouth to close, and the face to retain a natural appearance.

Preparing for Oral Cancer Surgery

Once surgery is recommended, several evaluations are usually carried out to plan the operation safely and accurately.

Imaging and Staging

• MRI or CT scan of the mouth, neck, and jaws to map the exact extent of the tumour
• PET-CT scan in advanced cases to look for spread elsewhere in the body
• Chest imaging to check the lungs, both for spread and for fitness for anaesthesia
• Ultrasound of the neck in some cases to assess lymph nodes

Biopsy Confirmation

A biopsy confirms the type of cancer. The pathology report guides surgical planning and any need for additional tests on the tumour tissue.

Dental Evaluation

If radiation may be needed after surgery, a dental review is important. Teeth that are unhealthy and may cause problems after radiation are often extracted before treatment begins, because dental work after radiation carries a higher risk of jaw complications.

Nutritional Assessment

Many people with oral cancer have lost weight before diagnosis because eating has become painful. Building up nutrition before surgery, sometimes with high-calorie supplements, helps healing.

Speech and Swallowing Baseline

A speech and language therapist may assess speech, voice, and swallowing before surgery. This baseline helps plan rehabilitation and sets realistic expectations.

Anaesthesia and Medical Clearance

Heart, lung, kidney, and blood tests check fitness for a long operation. Medications such as blood thinners may need to be paused. The anaesthetic team plans how to manage the airway, since the mouth itself is the operating area.

Lifestyle Preparation

Stopping smoking, chewing tobacco, and alcohol use as early as possible improves healing, reduces complications, and lowers the risk of the cancer coming back. Even a few weeks of abstinence before surgery makes a measurable difference.

Counselling and Planning

The team usually walks through what will be removed, what will be reconstructed, what scars or changes to expect, how speech and eating will be supported, and how long the hospital stay is likely to be. Bringing a family member to these conversations is often helpful.

What Happens During Oral Cancer Surgery

Oral cancer surgery is performed under general anaesthesia. The length of the operation depends on what is being done — a small wide local excision may take one to two hours, while a composite resection with neck dissection and free flap reconstruction can take eight to twelve hours or longer.

The operation generally follows these phases:

Airway Management

Because the mouth is the operating area, the breathing tube is often placed through the nose, or a temporary tracheostomy (a breathing opening at the front of the neck) is made. A tracheostomy keeps the airway safe during surgery and during the swelling that follows. It is usually temporary and is removed once swelling settles, typically in the days to weeks after surgery.

Tumour Removal

The surgeon removes the tumour with a margin of healthy tissue. Margins are checked during the operation by the pathology team (frozen-section analysis) to confirm that no cancer is left at the edges. If a margin is positive, more tissue is taken.

Neck Dissection

Through an incision in the neck, the relevant lymph node groups are removed. The surgeon takes care to preserve nerves and blood vessels wherever possible.

Reconstruction

If a flap is needed, a second surgical team often works at the same time to prepare it. Bone, muscle, and skin are shaped to fit the defect, and the blood vessels are reconnected to vessels in the neck under a microscope. The flap is then secured in place and the mouth is closed.

Closure and Recovery Setup

Drains are placed in the neck to remove fluid as healing begins. A feeding tube through the nose (nasogastric tube) is usually placed during surgery so that nutrition can begin without using the mouth. The person is then transferred to an intensive care or specialised head and neck unit for close monitoring.

Recovery and Healing

The First Few Days

The early days focus on stabilising the airway, controlling pain, monitoring the flap if reconstruction was done, and beginning nutrition through the feeding tube. Swelling of the face, tongue, and neck is expected and peaks in the first two or three days. The team checks the flap regularly to ensure its blood supply is healthy.

Hospital Stay

Hospital stays typically range from about five to fourteen days, longer for complex reconstructions. During this time:

• Drains are removed as fluid output decreases
• The tracheostomy is gradually downsized and removed as swelling settles
• Feeding tube nutrition continues while the mouth heals
• Wound care, mouth care, and infection prevention are part of daily routine
• Early speech and swallowing therapy begins
• Sitting up, walking, and breathing exercises start as soon as safely possible

The First Weeks at Home

Most wound healing happens over the first two to four weeks. The feeding tube may stay in place for several weeks until swallowing is safe enough for oral intake. Many people start with thickened liquids and pureed food before progressing to soft and then regular food. Pain gradually decreases. Returning to light activity is usually possible within a few weeks; heavier activity takes longer.

Swallowing and Speech Rehabilitation

Speech and swallowing therapy is one of the most important parts of recovery and continues for months. A speech and language therapist works with you on:

• Safe swallowing techniques to avoid food or liquid entering the airway
• Exercises to rebuild tongue and throat strength
• Articulation practice to improve clarity of speech
• Voice exercises if the larynx or surrounding structures were affected
• Use of assistive devices or strategies where needed

The pace of recovery varies. People with smaller resections may regain near-normal function within weeks. People who have had more extensive surgery may need many months and may live with some long-term changes — but with sustained rehabilitation, most regain the ability to eat and communicate in ways that support daily life.

Dental and Oral Care

Dental rehabilitation may be part of the longer-term plan. Dental implants placed in a reconstructed jaw can restore the ability to chew. Prostheses called obturators may be used after maxillectomy to separate the mouth from the nasal cavity. This phase is typically planned with the dental and reconstructive teams over months.

Adjuvant Treatment Timing

If radiation or chemoradiation is recommended after surgery, it usually starts within about six weeks of the operation, once healing is sufficient. Starting on time is important, and the team plans recovery with this window in mind.

Risks and Complications

Oral cancer surgery is major surgery, and complications can happen even in experienced hands. The team takes many steps to reduce these risks. Possible complications include:

• Bleeding: Either during surgery or in the days afterwards. Drains help detect and manage this.
• Infection: Of the wound, the mouth, or the chest. Antibiotics and good oral care reduce this risk.
• Flap complications: The reconstructed tissue depends on a delicate blood supply. Partial or complete flap failure is uncommon with experienced teams but is a recognised risk, and may require a return to the operating room.
• Fistula formation: An abnormal connection between the mouth and the skin or neck can develop where the wound heals poorly.
• Speech and swallowing difficulty: Some change is expected. The degree depends on the extent of surgery and responds, often substantially, to rehabilitation.
• Nerve injury: Loss of sensation in the lip, chin, or tongue, weakness of the lower lip, or shoulder weakness (from injury to the nerve supplying the trapezius muscle during neck dissection) can occur.
• Changes in appearance: Scars, asymmetry, and changes in facial contour are common. Modern reconstructive techniques aim to minimise these but cannot eliminate them entirely.
• Dental and jaw problems: Loss of teeth, changes in bite, and jaw stiffness (trismus) can occur, particularly when surgery is combined with radiation.
• Chyle leak: A leak of lymphatic fluid from the neck after dissection, which usually settles with conservative management.
• Anaesthesia and general surgical risks: Blood clots, chest infections, and reactions to anaesthesia.

The risk profile is higher for longer, more extensive operations and for people with significant other medical conditions. The team discusses individual risks before surgery.

Adjuvant Treatment After Surgery

After surgery, the pathology team examines the removed tissue in detail. The findings determine whether additional treatment is needed.

When Adjuvant Treatment Is Recommended

Major guidelines, including those from NCCN and ESMO, describe adjuvant treatment as appropriate when certain features are present, such as:

• Positive or close margins (cancer at or near the edge of the removed tissue)
• Lymph node involvement, especially multiple nodes or nodes on both sides
• Extranodal extension (cancer spreading outside the capsule of a lymph node)
• Perineural or lymphovascular invasion
• Advanced tumour stage

Radiation Therapy

Side effects can include mouth sores, dry mouth, taste changes, fatigue, skin reactions, and longer-term jaw and dental effects. Supportive care during radiation is important.

Chemoradiation

For higher-risk features such as positive margins or extranodal extension, chemotherapy is given alongside radiation. The chemotherapy makes the radiation more effective but adds side effects, including nausea, blood count changes, and kidney effects. The team weighs benefits and risks based on the individual.

Chemotherapy Alone

Chemotherapy on its own is not the standard adjuvant treatment for resected oral cavity cancer, but it has a role in recurrent or metastatic disease, sometimes combined with immunotherapy or targeted therapy.

Life After Oral Cancer Surgery

Life after oral cancer surgery is shaped by three things: the cancer itself and the chance of it coming back, the functional changes from surgery and any adjuvant therapy, and the emotional adjustment to all of it.

Long-Term Function

Most people regain the ability to eat by mouth, although what they can eat and how easily varies. Some live with a modified diet long-term — softer foods, smaller bites, more chewing. Speech may sound slightly different, especially after tongue surgery, but is usually understandable. Dental implants and prostheses can restore much of what was lost when chewing and bite are affected.

Appearance

Visible changes to the face, neck, and mouth depend on the extent of surgery and the reconstruction. Scars fade over months. Camouflage techniques, hair, glasses, and clothing choices can help. Some people find it useful to work with a counsellor or join a support group during this adjustment, particularly in the first year.

Mental and Emotional Health

Anxiety, low mood, body image concerns, and fear of recurrence are common after head and neck cancer treatment. These are real and treatable. Psychological support, peer support groups, and mental health care are part of comprehensive cancer care.

Tobacco and Alcohol

Continuing to smoke or use tobacco after treatment significantly increases the risk of the cancer coming back and of a new cancer developing in the mouth, throat, or lungs. Stopping completely is one of the most important things a person can do after oral cancer surgery. Support, nicotine replacement, and counselling all help.

Diet, Sleep, and General Health

Good nutrition, adequate sleep, regular activity, and managing other health conditions all support recovery and long-term wellbeing. A dietitian can help with practical strategies for eating well when chewing or swallowing is difficult.

Follow-Up and Surveillance

After treatment, regular follow-up looks for signs of recurrence and manages late effects. Typical follow-up includes:

• Frequent clinical examinations of the mouth and neck — often every one to three months in the first year, with gradually longer intervals over five years
• Imaging when there is a clinical concern or as part of planned surveillance
• Ongoing dental care, including monitoring for radiation-related jaw issues
• Continued speech and swallowing support as needed
• Thyroid function checks if the neck received radiation
• Smoking cessation support if relevant

Most recurrences happen in the first two to three years, which is why monitoring is most intensive during that period. Reporting any new lump, ulcer, pain, bleeding, or change in voice or swallowing promptly is part of safe follow-up.

Prognosis

Outcomes after oral cancer surgery depend strongly on stage at diagnosis, completeness of removal, lymph node involvement, and how well the cancer responds to any adjuvant treatment. In general, early-stage oral cancers have a substantially better outlook than advanced ones, and stopping tobacco and alcohol use significantly improves long-term outcomes. Individual prognosis is best discussed with the treating oncologist, who has the full picture of the pathology and treatment.

Frequently Asked Questions

Will I be able to speak normally after oral cancer surgery?

It depends on which structures are removed. For smaller surgeries, speech often returns to near-normal within weeks. For larger resections involving the tongue, palate, or jaw, speech may be different but is usually understandable, especially with sustained speech therapy. The voice itself is not affected unless the larynx is involved.

Will I be able to eat normally again?

Most people return to eating by mouth, though the texture and variety of foods may need to be adjusted. A feeding tube is often used temporarily during early recovery. Swallowing therapy plays a key role in getting back to eating, and a dietitian can help adapt the diet to your needs.

How long will I be in hospital?

For smaller resections, hospital stay may be a few days. For major operations with reconstruction, it is often one to two weeks, sometimes longer.

How long is the total recovery?

Initial wound healing takes a few weeks. Functional recovery — swallowing, speech, eating, returning to work — usually unfolds over two to six months, longer for the most extensive surgeries.

What is a free flap, and why is it used?

A free flap is a piece of tissue (skin, muscle, sometimes bone) taken from another part of the body and moved to the mouth or jaw. The blood vessels are reconnected under a microscope. Free flaps allow reconstruction of large defects with good functional and cosmetic results and are a cornerstone of modern oral cancer surgery.

Will I need radiation or chemotherapy after surgery?

Whether adjuvant treatment is needed depends on what the pathology shows after surgery — mainly the size and aggressiveness of the tumour, the margins, and the lymph nodes. The tumour board makes this decision after reviewing the pathology report.

Will the cancer come back?

Some risk of recurrence exists with any cancer. The risk depends on stage, completeness of removal, response to treatment, and lifestyle factors such as continued tobacco use. Regular follow-up is designed to catch recurrence early when it is most treatable.

Is robotic surgery better than open surgery for oral cancer?

Robotic surgery (transoral robotic surgery) is helpful for selected tumours at the back of the tongue and oropharynx, allowing operation through the mouth without external incisions. It is not better or worse in itself — it is one option among several. Whether it is suitable for a specific tumour is a clinical decision based on tumour location, size, and access.

Can I have dental implants after jaw surgery?

In many cases, yes. Dental implants can be placed in a reconstructed jaw, often in a second stage several months after the main surgery and after any radiation has been completed. The dental and reconstructive teams plan this together.

Will my face look very different?

Modern reconstruction aims to preserve facial contours and symmetry. Some change is usually visible, particularly after extensive surgery, but the change is often less dramatic than people fear before surgery. Scars fade over time. A frank conversation with the surgical and reconstructive team about expected appearance is helpful before the operation.

Do I really need to stop smoking and drinking?

Yes. Continued tobacco and heavy alcohol use significantly worsen healing, raise the risk of complications, increase the chance of the cancer coming back, and raise the risk of new cancers. Stopping is one of the most important parts of treatment, and support is available to help.

Conclusion

Oral cancer surgery is at the centre of treatment for most cancers of the mouth. It is a major undertaking, but it is also the most reliable way to remove the cancer completely and to give the best long-term chance of cure. The combination of careful tumour removal, neck dissection where needed, and modern reconstruction means that even after substantial surgery, many people return to a meaningful daily life — eating, speaking, working, and being with the people who matter to them.

The path through this treatment involves a head and neck oncology team, a tumour board, surgeons, anaesthetists, reconstructive specialists, dentists, speech and swallowing therapists, dietitians, and counsellors. Rehabilitation is not an add-on; it is a core part of treatment, and the months after surgery are when much of the recovery of function and confidence happens. Understanding what is involved makes it easier to take an active part in the decisions ahead and to plan the road through treatment and into life beyond it.