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A leak at the join after throat surgery: the pharyngocutaneous fistula | CION Cancer Clinics
A pharyngocutaneous fistula is a leak. The join between the rebuilt throat and the food pipe has not sealed, so saliva escapes into the neck and out through the skin. It is one of the more common problems after a laryngopharyngectomy, especially after radiotherapy, and most close with tube feeding, dressings and patience rather than another operation. This page explains the signs, the causes and what the weeks of treatment look like. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
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Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
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The short answer
What is a pharyngocutaneous fistula?
A pharyngocutaneous fistula is a leak. The join between the rebuilt throat and the rest of the food pipe has not sealed, so saliva escapes into the neck and finds its way out through the skin or the wound. It is one of the more common problems after a laryngopharyngectomy, and most close with time and careful nursing rather than another operation.
Why the join can leak
The surgeon has stitched stomach or bowel to what is left of the throat. That join has to heal in a neck that has often had radiotherapy, which reduces its blood supply. Saliva runs over the join from the first hour. If the tissue is poorly nourished, tight, or short of blood, a small gap opens and saliva leaks through it.
When it shows up
Most leaks declare themselves in the first two weeks, usually before you have been allowed to swallow. The team is watching for exactly this, which is why you are kept on tube feeding and why a swallow test is done before the first sip. A leak found early is much simpler to manage than one found after eating has started.
A fistula is a setback, not a failure of the cancer operation. The two are separate questions.
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Signs that need the team today
After you go home, a fever, new redness or swelling in the neck, a wound that starts to smell or ooze, or saliva or drink appearing at the wound or the stoma when you swallow. Any of these can mean a leak. Stop eating and drinking by mouth, and call the hospital that did the operation the same day. Do not wait for the next clinic date, and do not start antibiotics from a local pharmacy without speaking to the team first.
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What makes a leak more likely?
None of these cause a fistula on their own. Each makes the join a little harder to heal, and they add up.
Radiotherapy before the operation
This is the biggest single factor. Irradiated tissue has less blood flowing through it and heals more slowly. Surgery after a full course of radiotherapy is the situation where leaks are most common.
Poor nutrition going in
People with throat cancer have often lost a lot of weight before surgery because swallowing hurt. Low protein in the blood means the body has less to build new tissue with. This is why the dietitian is involved before the operation, not after.
Other illnesses
Uncontrolled diabetes, a low haemoglobin, heavy smoking up to the day of surgery, and thyroid hormone levels left low after earlier treatment all slow healing.
Bring every medicine and every old report to the pre-operative visit, even ones that seem unrelated.The join itself
A join under tension, one made with very little throat left to stitch to, or one with a blood-supply problem in the flap or pull-up is more likely to open. Your surgeon will usually know at the end of the operation whether the join was straightforward.
What happens next
How is a fistula treated?
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Nothing by mouth
Swallowing stops so that saliva and food are not pushed through the gap. All nutrition goes through the feeding tube, and the dietitian adjusts it upwards, because healing a leak needs more protein than healing without one.
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Opening and cleaning the wound
The team lets the saliva out rather than trapping it. Part of the wound may be opened, washed and packed with dressings that are changed daily. This looks alarming, but it is the standard way of letting the tissue heal from the inside.
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Protecting the stoma and the big vessels
Saliva running near the breathing hole or over the main neck artery is the real danger. Dressings are arranged to steer it away, and the team checks the neck several times a day.
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Antibiotics and waiting
Infection is treated, and then the job is patience. Most small leaks close on their own over weeks. A swallow X-ray is repeated before anything is allowed by mouth again.
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If it will not close
A large leak, or one that has not closed after a long wait, may need another operation. A piece of muscle from the chest, with its own blood supply, is often used to cover the gap. Whether that is needed is a decision for your team.
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On the ward
Words you will hear, in plain language
- Fistula
- An abnormal opening between two places that should be separate. Here it is between the food passage and the skin of the neck.
- Pharyngocutaneous
- Pharynx means throat, cutaneous means skin. The term just says where the leak runs from and to.
- Nil by mouth
- Nothing to eat or drink, not even sips. Written on the chart as NBM or NPO. Mouth care with swabs is still done.
- Contrast swallow
- An X-ray taken while you drink a dye. If the dye stays inside the tube, the join is sealed. If it escapes, there is still a leak.
- Pectoralis flap
- A piece of chest muscle swung up into the neck, with its own blood supply, to cover a leak that will not close on its own.
Commonly believed
What families tell us, and what is actually true
"The surgeon must have made a mistake."
Leaks happen after this operation in careful hands. The join is asked to heal in tissue that radiotherapy has already damaged, with saliva running over it all day. Experienced teams expect some fistulas and have a routine for them.
"He is starving. We should give him something by mouth."
Every swallow pushes saliva and food through the gap and keeps it open. The feeding tube is giving more nutrition than a meal would. Slipping him a little water or coconut water is the single most common way a healing leak is set back.
"An open wound means infection has taken over."
The wound is opened on purpose to let saliva out and to let the team clean it. A packed, draining wound that is checked daily is under control. A closed wound with pus building up behind it is the dangerous one.
"If it needs another operation, the cancer treatment has failed."
A flap to close a fistula is a repair of the plumbing. It says nothing about whether the cancer was removed. The pathology report answers that question.
Being straight with you
What this page cannot tell you
It cannot tell you whether your own join will leak, how long a leak will take to close, or whether a further operation will be needed. Published rates vary widely between centres and between patients who have and have not had radiotherapy.
What a longer stay means for the family
A fistula usually turns a stay of a couple of weeks into one of several. Someone needs to be with the patient, and the dressings need a trained hand. If you are travelling from a district, ask early about a place to stay near the hospital.
What to ask your team
Ask how the join looked at the end of the operation. Ask when the first swallow test is planned and what would delay it. Ask who to call at night if the neck changes after discharge. If a flap repair is suggested, ask what it involves and what recovery from that looks like.
Keep a photo of the neck wound on your phone from the day of discharge, so a change is easier to describe.Questions we are asked
Common questions about fistulas after throat surgery
How would we know there is a leak before it comes through the skin?
The early signs are a fever, a rising pulse, a neck that looks puffier or redder than the day before, and sometimes a bad taste or smell. On the ward the nurses check for these several times a day, and a swallow X-ray before the first drink is how many leaks are found.
Is a fistula dangerous?
Most are not, if they are found early and nursed well. The serious risks are saliva reaching the breathing hole, or running over the main artery in the neck for weeks, and infection spreading into the chest. That is why a leak is treated in hospital rather than at home, and why the team is strict about nothing by mouth.
How long will it take to close?
It varies from a couple of weeks to a few months, and no one can promise a date at the start. Small leaks in someone who has not had radiotherapy close fastest. A large leak in an irradiated neck may need an operation to close it.
Can he go home while the fistula is still open?
Sometimes, once the leak is small, clean and clearly shrinking, and once someone at home has been taught the dressing and the tube feeds. Ask for a written plan, a photo of what the wound should look like, and a number to call.
Will he still be able to eat normally afterwards?
Usually yes, but a healed fistula leaves more scar at the join, and scar can tighten. That makes a later narrowing, called a stricture, more likely. If food starts to stick in the months after the leak has closed, tell the team early. A stretch is a short procedure.
Does the fistula affect the voice valve?
If a voice prosthesis was placed at the operation, it usually stays in but is not used until the leak has closed, because speaking pushes air through the join. If the puncture had not yet been made, the team will wait until the neck has fully healed before making it.
Why is he on a feeding tube for so long?
Because the join needs rest and the body needs more protein than usual to seal it. The tube delivers both. It is not a sign of decline. Most people come off it once the swallow test shows the leak has closed. The dietitian sets the amounts.
Is the longer stay covered by Aarogyasri or insurance?
Often the extra days and the dressings are covered as part of the same admission, but the rules differ between Aarogyasri, CGHS, ECHS, EHS and cashless insurers, and a second operation may need a fresh approval. Ask the scheme desk as soon as a fistula is diagnosed.
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Sources
- National Cancer Institute — Hypopharyngeal Cancer Treatment (PDQ) - Patient Version
- Cancer Research UK — Laryngeal cancer
- American Cancer Society — Laryngeal and hypopharyngeal cancer
- NHS — Laryngeal (larynx) 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
Stricture at the Join and DilatationThe narrowing that a healed leak makes more likelyRecovery and Hospital StayWhat the stay looks like when nothing goes wrongComplications and Red FlagsEverything else that needs same-day care after surgeryDrains, Tubes, Lines and CathetersThe feeding tube, explainedCaretaker and Family Guide to SurgeryFor the person doing the dressings at home
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