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Sublingual gland surgery: what happens and why | CION Cancer Clinics
Sublingual gland surgery removes the small saliva gland that lies under the tongue, usually through the mouth with no cut on the face or neck. It is done for a ranula, a saliva-filled swelling, and for tumours. Tumours here are rare, but a high share are cancers, so a wider operation with neck lymph nodes may be needed. The nearby tongue nerve and saliva tube are the main things at risk. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
MI
Medically reviewed by Dr. Mohammed ImaduddinConsultant Surgical Oncologist · MBBS, MS (General Surgery), MCh (Surgical Oncology) · last reviewed September 2026, next review due September 2027
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On this page
- What is sublingual gland surgery?
- How is a ranula different from a tumour?
- What does the operation involve?
- What sits close to the gland, and what could change?
- What is recovery like after surgery under the tongue?
- What do people often believe about swellings under the tongue?
- Common questions about sublingual gland surgery
The short answer
What is sublingual gland surgery?
Sublingual gland surgery removes the small saliva gland that lies under the tongue, in the floor of the mouth. For most people it is done through the open mouth, so there is no cut on the skin. You are asleep under a general anaesthetic.
Why the gland is removed
The most common reason is a ranula. This is a soft, often bluish swelling under the tongue, made of saliva that has leaked from the gland. Draining it alone often fails, because the gland keeps leaking, so removing the gland is usually more reliable. A less common reason is a solid lump, which may be a tumour.
Why a solid lump is taken seriously
Tumours of the sublingual gland are rare. When they do occur, a large share turn out to be cancers, unlike many lumps in the bigger saliva glands. So a firm lump under the tongue needs a biopsy and scans before any operation is planned. This page cannot tell you what your own lump is. Only those tests can.
Side by side
How is a ranula different from a tumour?
Ranula
Tumour
A soft swelling that may look bluish, like a small water balloon
A firm or hard lump that does not feel as if it holds fluid
Can go up and down in size
Tends to grow steadily, even if slowly
Sometimes spreads down into the neck as a soft swelling
May cause tongue numbness or an ulcer if it is a cancer
Usually treated by removing the gland and emptying the swelling
Needs a biopsy and scans first, then an operation planned around the result
Not sure whether this applies to you?
Ask an oncologistThe operation
What does the operation involve?
For a ranula or a small lump that is not cancer, the surgeon works through the mouth. A cut is made in the lining under the tongue, and the gland is lifted out while the nearby saliva tube and tongue nerve are kept safe. The lining is closed with stitches that dissolve.
When the tumour is a cancer
A cancer needs a wider operation. The surgeon removes the gland with a margin of healthy tissue, which may include part of the floor of the mouth, the submandibular gland next to it, and lymph nodes in the neck. The neck part is done through a separate cut. Where a larger area is removed, tissue may be moved in to rebuild the floor of the mouth.
What the team weighs
They look at the type and size of the tumour, whether it reaches the jawbone or the tongue, whether lymph nodes are affected, and how fit you are for a longer operation. They also think about speech and swallowing afterwards. Ask what will be removed, and why, before you agree to the plan.
The risks
What sits close to the gland, and what could change?
Three things run right beside the sublingual gland. Most people have no lasting problem with any of them, but knowing about them helps you spot a change early.
The tongue nerve
The lingual nerve gives feeling and taste to the front of the tongue. If it is stretched, one side of the tongue can feel numb for a while. Lasting numbness is less common.
The saliva tube from under the jaw
This tube carries saliva from the submandibular gland into the mouth. If it is scarred or narrowed as the wound heals, the gland under the jaw can swell at mealtimes. This usually settles or can be treated.
Blood vessels under the tongue
The floor of the mouth has a rich blood supply. Bleeding is uncommon, but it can cause swelling under the tongue that needs checking straight away.
Swelling that lifts the tongue or makes breathing hard needs emergency care the same day.Leave a number, we will call you
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Recovery
What is recovery like after surgery under the tongue?
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The day of surgery
Your mouth will feel sore and swollen, and talking may be awkward. After a small operation through the mouth, many people go home the same day or the next. A larger cancer operation means a longer stay.
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The first week
Eat soft, cool food and sip fluids often. Rinse gently after meals as your team advises. Avoid very hot, spicy or crunchy food, and try not to poke the stitches with your tongue.
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The next few weeks
Stitches dissolve on their own and the swelling fades. Tongue numbness, if you have it, may begin to improve. Most people return to work fairly quickly after a small operation.
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Follow-up
Your surgeon checks the healing and goes through the pathology report. For a ranula, they check the swelling has not returned. For a cancer, the next steps are planned at the tumour board.
Commonly believed
What do people often believe about swellings under the tongue?
"A ranula can just be drained with a needle."
Draining empties the swelling, but the gland keeps leaking saliva, so it often fills up again. Removing the gland is usually more reliable. Your surgeon may still suggest a smaller procedure first in some cases, and can explain why.
"A lump under the tongue is only a blocked gland."
Many swellings are, but a firm lump that does not come and go needs checking. Tumours here are rare, yet they are more likely to be cancers than lumps in the bigger glands. A biopsy settles the question.
"Surgery inside the mouth will change my voice."
After a small operation, speech usually returns to normal once the soreness settles. Wider cancer surgery can affect tongue movement for a time, and a speech therapist can help. Ask what to expect for your own operation.
"Once the gland is out, my mouth will be dry."
The sublingual gland makes only a small share of your saliva. The other glands usually keep the mouth comfortable. Dryness is more likely if radiotherapy follows, which is a separate discussion with your team.
Did you know
A ranula takes its name from the Latin word for a small frog, because the swelling under the tongue was thought to look like the belly of a frog. It is a leak of saliva, not a tumour.
Questions we are asked
Common questions about sublingual gland surgery
Is sublingual gland surgery done from inside the mouth?
Usually, yes. For a ranula or a small lump that is not cancer, the gland is removed through the mouth, and there is no cut on your skin. If the swelling reaches into the neck, or a cancer needs lymph nodes removed, a cut in the neck may be added. Your surgeon will explain the plan.
Is a lump under my tongue cancer?
Most swellings under the tongue are not cancer. A soft, bluish swelling is often a ranula. A firm lump that keeps growing, or one that causes numbness, bleeding or an ulcer, needs prompt checking, because the few tumours found here are often cancers. Only a biopsy can tell you for certain.
How long will I be in hospital?
After a small operation through the mouth, many people go home the same day or the next morning. A wider operation for cancer, especially one that includes neck lymph nodes or repair tissue, needs a longer stay. The team will tell you what to expect for your own operation before the day.
What can I eat after surgery?
Start with soft, cool foods such as curd rice, idli, soft upma, dal and mashed vegetables. Sip water often. Avoid very hot, spicy, sharp or crunchy foods until the mouth has healed. If eating is hard enough that you are losing weight, tell your team and ask to see a dietitian.
Can a ranula come back?
It can, particularly if only the swelling was drained and the gland was left behind. Removing the gland lowers that chance a great deal. If you notice the swelling returning, see your surgeon rather than waiting, so they can check it and plan the next step.
Will my tongue feel numb?
Some people have numbness on one side of the tongue after this surgery, because the tongue nerve runs next to the gland. It usually comes from the nerve being stretched, and feeling often returns over weeks to months. Take care with hot drinks and chew slowly while it recovers.
Will I need radiotherapy?
Not for a ranula or a lump that is not cancer. For a cancer, the team looks at the type, grade, margins and lymph nodes. Radiotherapy is often discussed after surgery for cancers of this gland. The recommendation comes from the tumour board once the pathology report is ready.
Is it covered by Aarogyasri or my insurance?
Often, yes, particularly when surgery is part of cancer treatment. Aarogyasri, CGHS, ECHS and EHS are accepted, and most cashless insurers are empanelled. Cover for a ranula operation depends on your policy. Call the helpline with your card details and the team will check what applies to you.
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Sources
- NHS — Salivary gland cancer
- Cancer Research UK — Salivary gland cancer
- National Cancer Institute — Salivary gland cancer treatment (PDQ), patient version
- Cancer.Net — Salivary gland cancer
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Submandibular Gland Removal: What It InvolvesThe neighbouring gland, sometimes removed with a cancerTongue Movement and Sensation AfterwardsWhat to expect if your tongue feels numbBenign vs Malignant Salivary Tumours: What ChangesHow a cancer result changes the planRadiation After Salivary Gland SurgeryWhen radiotherapy is added after surgery
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