Chemotherapy for Brain and Spinal Cord Tumors in Children

Chemotherapy (chemo) uses anti-cancer drugs that are usually given into a vein (IV) or taken by mouth. These drugs enter the bloodstream and reach almost all areas of the body. However, many chemo drugs aren’t able to enter the brain and reach tumor cells.

For some brain tumors, the drugs can be given directly into the cerebrospinal fluid (CSF), either in the brain or into the spinal canal below the spinal cord. To help with this, a thin tube known as a ventricular access catheter may be inserted through a small hole in the skull and into a ventricle during a minor operation (see Surgery).

In general, chemo is used for faster growing tumors. Some types of brain tumors, such as medulloblastoma, tend to respond well to chemo.

Chemo is most often used along with other types of treatment such as surgery and radiation therapy. It may be used instead of radiation therapy in children 3 years and younger.

Some of the chemo drugs used to treat children with brain tumors include:

Carboplatin

Carmustine (BCNU)

Cisplatin

Cyclophosphamide

Etoposide

Lomustine (CCNU)

Methotrexate

Temozolomide

Thiotepa

Vincristine

These drugs may be used alone or in various combinations, depending on the type of brain tumor. Doctors give chemo in cycles. Each cycle generally lasts about 3 to 4 weeks and is followed by a rest period to give the body time to recover.

Possible side effects of chemotherapy

Chemo drugs attack cells that are dividing quickly, which is why they often work against cancer cells. But other cells in the body, such as those in the bone marrow (where new blood cells are made), the lining of the mouth and intestines, and the hair follicles, also divide quickly. These cells can also be affected by chemotherapy, which can lead to side effects.

The side effects of chemo depend on the type of drugs, the amount taken, and how long they are taken. Possible side effects can include:

Some of the most effective drugs against brain tumors tend to have fewer of these side effects than other common chemo drugs, but they can still occur. Most side effects tend to be short-term and go away once treatment is finished. Your child’s doctor and treating team will watch closely for any side effects. There are often ways to lessen these side effects. For example, drugs can be given to help prevent or reduce nausea and vomiting.

Along with the risks above, some chemo drugs can have other, less common side effects. For example, cisplatin and carboplatin can also cause kidney damage and hearing loss. Your child’s doctor will check your child’s kidney function and hearing periodically if he or she is given these drugs.

Be sure to ask your child’s doctor or nurse about medicines to help reduce side effects, and let them know if your child has side effects so they can be managed. In some cases, the doses of the chemo drugs may need to be reduced or treatment may need to be delayed or stopped to prevent the effects from getting worse.

For more information on chemotherapy, see the Chemotherapy section on our website.

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