The word biopsy often causes anxiety in patients, because it is immediately associated with the thought of serious illness. In reality, a biopsy is simply a diagnostic procedure: a very small piece of tissue is taken so that it can be examined under a microscope. It is not a treatment, and it does not mean that the diagnosis is a bad one — it only means that the doctor wants a precise answer rather than an assumption.
In otorhinolaryngology (the speciality of the ear, nose and throat), a biopsy is used routinely to clarify changes in the lining of the throat, larynx, nose and mouth, or in the glands of the neck. In this article we explain when it is needed, how it is performed, what the patient feels and how long the results take.
When a biopsy is needed in ENT
The decision to perform a biopsy is made after the clinical examination and, in many cases, after an endoscopy — an examination with a thin camera device that allows the nose, throat and vocal cords to be viewed directly. If the doctor sees a change that cannot be explained by an ordinary infection or inflammation, a biopsy becomes the next step.
The most common situations are:
- Hoarseness lasting more than three weeks, especially in smokers, when a white or red patch or a thickening of the mucosa is seen on the vocal cords.
- Sores or ulcers in the mouth and throat that do not heal within two to three weeks.
- Difficulty or pain on swallowing without a clear cause, sometimes with pain radiating towards the ear.
- A lump or swelling in the neck that remains unchanged, grows slowly, or is not accompanied by an infection.
- Persistent blockage of one side of the nose with recurrent bleeding, where an atypical polyp or another growth is suspected.
- Tonsils of markedly different size from one another, or with an irregular appearance.
- Follow-up of a previously known change, to see whether it has developed or remained the same.
Most of these biopsies show non-cancerous findings: chronic inflammation, papilloma, or changes caused by acid reflux or smoking. Only microscopic examination, however, can establish this with certainty.
Types of biopsy in otorhinolaryngology
Incisional biopsy
Only a small part of the lesion is removed, while the rest is left in place. This is the most common method when the growth is large or when its nature needs to be known before treatment is planned.
Excisional biopsy
The entire change is removed and sent for analysis. This is used when the lesion is small and complete removal is both diagnostic and therapeutic — for example a small polyp of the vocal cords.
Fine-needle puncture
For neck lumps and for the thyroid gland, fine-needle aspiration is often used: with a needle similar to the one used for blood tests, cells are taken from the lump, usually under ultrasound guidance. It is a quick and minimally invasive procedure.
Endoscopic biopsy or biopsy in the operating theatre
When the lesion lies deeper — in the larynx, in the lower part of the throat or in the nose — the biopsy is taken with fine instruments through the endoscope. In some cases this is done under local anaesthesia in the outpatient clinic; in others under general anaesthesia in the operating theatre, for greater accuracy and greater comfort for the patient.
How the patient prepares
Preparation depends on the type of biopsy. For procedures under local anaesthesia no special preparation is usually required, apart from informing the doctor about:
- the medicines you take, especially blood thinners;
- allergies to medicines or anaesthetics;
- chronic conditions, blood clotting problems or pregnancy.
If general anaesthesia is planned, you will be asked not to eat or drink for several hours before the procedure, according to the instructions given to you in advance, and you should usually have someone to accompany you home.
What happens during the procedure
In biopsies of the throat and larynx under local anaesthesia, the area is first numbed with an anaesthetic spray or gel. The most common sensation is numbness of the tongue and throat, along with a feeling of pressure or touch while the sample is taken — not sharp pain. Taking the sample itself lasts only a few seconds; the whole appointment rarely exceeds 20–30 minutes.
In cases performed under general anaesthesia, the patient feels nothing during the procedure and wakes up afterwards in the recovery room.
The sample is placed immediately in a preserving solution and sent to the pathology laboratory — the discipline that studies tissue under the microscope.
After the biopsy: what to expect
Symptoms after a biopsy are usually mild and temporary:
- mild pain or a stinging sensation in the throat for one to several days;
- traces of blood in the saliva during the first few hours;
- temporary hoarseness, if the biopsy was taken from the larynx;
- local tenderness at the puncture site in neck biopsies.
Your doctor will give you individual instructions on eating, resting your voice and when to return to normal activities. You should contact the clinic immediately if you have bleeding that does not stop, difficulty breathing, a high temperature, or pain that worsens from day to day.
How long biopsy results take
This is the question that worries patients most. The pathology report does not arrive the same day, because the tissue goes through several technical steps: fixation, processing, very thin sectioning, staining, and then examination by the pathologist.
In practice, for straightforward biopsies the result is usually available within a few days up to around two weeks. The timeframe may be longer when additional tests are needed, such as immunohistochemistry — special staining tests that help determine the exact cell type. This delay does not mean bad news; it means the pathologist is working towards maximum accuracy.
You should read the result together with your ENT doctor, not on your own. The terms used in a pathology report are technical and easily misunderstood outside the clinical context. At the follow-up appointment the doctor will explain the finding and the next steps — which may be simply periodic monitoring, treatment with medication or, in certain cases, a planned procedure.
Practical advice
Do not postpone a consultation if you have hoarseness, a sore in the mouth or a lump in the neck lasting longer than two to three weeks. In the vast majority of cases the cause is benign, but early diagnosis makes any treatment simpler. This article is for information only and does not replace medical assessment — for a diagnosis and treatment plan, always consult an ENT specialist.
Frequently asked questions
Does a throat biopsy hurt?
The area is numbed beforehand with local anaesthesia, or the procedure is performed under general anaesthesia, so no sharp pain is felt while the sample is taken, rather a sensation of pressure. Once the anaesthetic wears off there may be mild throat pain for a few days.
Does a biopsy mean I have cancer?
No. A biopsy is performed to clarify the nature of a change, not to confirm a particular diagnosis. A large proportion of ENT biopsies show chronic inflammation or benign changes.
Can I eat and speak normally after a biopsy?
Usually yes, once the effect of the anaesthetic has worn off. After biopsies of the larynx the doctor may recommend voice rest and soft food for a few days. Precise instructions are given individually.
Why do results sometimes take longer than expected?
Because the pathologist may require additional staining or tests to determine the tissue type precisely, or because the sample needs a second opinion. This is a normal part of the process and serves to make the diagnosis more reliable.
Will the biopsy need to be repeated?
In some cases yes — for example when the sample was small, when the result does not match the clinical picture, or when the lesion changes over time. Your doctor will explain the reason if this is necessary.