Gliadel wafers are small discs. They are about the size of a five pence (5p) coin. They are sometimes used to treat high-grade brain tumours called gliomas along with surgery and occasionally radiotherapy.
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Gliadel is a chemotherapy drug. It is used to treat brain tumours called high-grade malignant glioma and glioblastoma multiforme.
It is best to read this information with our general information about chemotherapy and the type of cancer you have.
Gliadel wafers are put in during surgery to remove the brain tumour. This will be discussed with you before your operation. Like all chemotherapy drugs, Gliadel can cause side effects. Some of the side effects can be serious, so it is important to read the detailed information below.
Your healthcare team can give you advice on how to manage any side effects. Tell your doctor or nurse straight away if you:
Rarely, side effects may be life-threatening. Your surgeon will explain the risk of these side effects to you.
If you need medical attention for any reason other than cancer, always tell the healthcare staff that you are having this treatment.
The operation is carried out by a neurosurgeon. This is a surgeon who specialises in brain surgery.
The surgeon placesthe wafers into the area in the brain where the tumour has been removed. Usually, up to eight wafers are used. The wafers release a chemotherapy drug called carmustine directly to the surrounding cells as they dissolve. This usually takes around two to three weeks. They do not need to be removed.
Gliadel wafers may only be suitable in certain situations. Your surgeon can tell you if this treatment is appropriate for you. Some people may be given it as part of a clinical trial.
If a drug is not available on the NHS, there may be different ways you can still have it. Your healthcare team can give you advice. We have further information on what to do if a treatment isn’t available.
Both Gliadel and surgery can cause side effects. Sometimes, it can be difficult to know if a side effect is caused by the Gliadel or the surgery.
We explain the most common side effects of this treatment here. We also include some less common side effects. You may get some of the side effects we mention, but you are unlikely to get all of them.
Although this list might look worrying, you are unlikely to get all of these. Your healthcare team will talk to you before your operation. They can answer any questions you have about the treatment and the possible side effects.
Always tell your doctor or nurse about any new symptoms you get, or if symptoms get worse. They can give you advice about how to manage these and any drugs that may help. We have more information about side effects of brain surgery.
Some cancer treatments can cause severe side effects. Rarely, these may be life-threatening. Your cancer doctor or nurse can explain the risk of these side effects to you.
Your nurse will give you telephone numbers for the hospital. If you feel unwell or need advice, you can call them at any time of the day or night. Save these numbers in your phone or keep them somewhere safe.
These side effects can also happen after surgery to the brain. Your doctors and nurses will monitor you very closely.
You may be more likely to have seizures. This is usually within the first five days after your operation. You doctor may prescribe medicines for a short time to help prevent these. If you have already been having seizures, you can talk to your surgeon about the medicines you take.
Headaches are common after brain surgery and with Gliadel treatment. Your doctor will tell you which painkillers will help. Tell them if the headaches get worse.
This can happen after surgery to the brain and treatment with Gliadel. You doctor or nurse will usually give you steroids to help reduce this.
Let your doctors or nurse know straight away if you:
Your doctors and nurses will be checking you closely for any signs of infection. Tell them if you have:
It may take longer for your operation wound to heal. This is because chemotherapy can affect the healing process. Your doctor or nurse will check your wound regularly. If you notice any leakage from the wound, swelling or redness in the area, tell your doctor or nurse straight away.
The following side effects may be related to your surgery, Gliadel or other treatments you are having.
This is rare with Gliadel because not much of the carmustine drug is absorbed into the bloodstream. This means there is less risk of infection than with chemotherapy into the vein. But it can still happen.
Chemotherapy can reduce the number of white blood cells in your blood. These cells fight infection. If the number of white blood cells is low, you are more likely to get an infection. A low white blood cell count is called neutropenia.
If you have an infection, it is important to treat it as soon as possible. Contact the hospital straight away on the 24-hour contact number you have if:
Symptoms of an infection include:
If you feel sick, this can be controlled by taking anti-sickness (anti-emetic) drugs that your doctor can prescribe for you. Tell your doctor if the sickness does not improve so they can prescribe other anti-sickness drugs which may work better for you.
This treatment may cause a mild skin rash. If this happens, tell your doctor or nurse. They may give you creams or medication to help.
Cancer and some cancer treatments can increase the risk of a blood clot. Symptoms of a blood clot include:
If you have any of these symptoms, contact a doctor straight away.
A blood clot is serious, but can be treated with drugs that thin the blood. Your doctor or nurse can give you more information.
Your blood sugar levels may be higher than usual. This may be due to some of the other medicines you are taking after the operation. Your doctor will talk to you about how to manage this.
Your doctor will advise you not to become pregnant or father a child during treatment. This is because the drugs may harm a developing baby. You can talk to your doctor or nurse about this.
Women are advised not to breastfeed while having this treatment and for some time afterwards. This is because the drugs could be passed to the baby through breast milk.
If you need medical treatment for any reason other than cancer, always tell the doctors and nurses that you are having cancer treatment. Give them the contact details for your cancer doctor so they can ask for advice.
If you think you need dental treatment, talk to your cancer doctor or nurse. Always tell your dentist you are having cancer treatment.
Order booklets or audio CDs about chemotherapy. It includes how it works, having treatment and how it might affect you.
All types of treatment can have different side effects. Know what to expect to help you find the best way for you to handle them.
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