Chemotherapy (chemo) uses anticancer medicines to kill cancer cells. These medicines are made to attack and kill cancer cells, which grow quickly. Some normal cells also grow quickly. Because of this, chemotherapy can also harm those cells. This can cause side effects.
Chemo is a main part of treatment for most people with non-Hodgkin lymphoma. It may be used along with other treatments, such as radiation or targeted therapy. You will see a medical oncologist for chemo. This is a doctor who specializes in using medicines to treat cancer.
You can get chemo in many ways:
IV (intravenous) . Chemo can be put right into your blood. This is done through an IV line (intravenous tube or catheter) that's put into a vein in your hand or arm. Or the IV may be put in through an implanted port that's put under the skin of your upper chest. The chemo might go in for a few minutes or for a longer time. IV chemo is the most common way to get chemo for non-Hodgkin lymphoma.
Shot (injection). You might get chemo as a shot. A needle is used to put it into a muscle or under your skin.
By mouth (oral). You swallow the chemo as pills.
Intrathecal. If the lymphoma has reached your brain or spinal cord, you may get chemo put into your cerebrospinal fluid (CSF). This fluid protects and cushions your brain and spinal cord. A thin needle is put between the bones in your lower back and chemo is put into the CSF.
How you get chemo and how often you get it depends on the medicines used. Most people get chemo in an outpatient part of the hospital or at their doctor's office. But depending on which medicines you're getting and your overall health, you may need to be in the hospital for treatment.
You'll likely need to have many IVs put in to get chemotherapy. Because of this, it can be helpful to have a central venous catheter (CVC) put in. This is also called a venous access device (VAD). This device is put in during surgery. It's most often a small drum that sits just under your skin. There's a tube attached to it that goes into a vein near your heart. You may hear it called a port. A needle is put into the drum each time you get chemo. Ports can stay in place for a long time. This means you don't need a new IV each time you get treatment. Talk with your healthcare team about the risks and benefits of having a CVC.
You get chemo in cycles over a period of time. This means you get chemo for a set amount of time and then you have a rest period. Each period of treatment and rest is one cycle. You may have several cycles. Having treatment in cycles helps by:
Killing more cancer cells. The medicines can kill more cancer cells over time. Chemo kills cells at certain points when they're dividing and growing. Cycles of chemo can kill more cells, because cells aren't all at the same stage of growth at the same time.
Giving your body a rest. Chemo is hard on other cells in your body that divide quickly. This includes blood cells and cells in the lining of your mouth and stomach. It also includes your hair, skin, and nail cells. Damage to these healthy cells causes side effects such as low blood counts, mouth sores, upset stomach (nausea), and hair loss. Between cycles, your body can get a rest from chemo side effects.
Giving your mind a rest. Getting chemo can be stressful. Taking breaks between cycles can let you get an emotional rest between treatments.
You'll most likely get more than 1 type of chemo medicine. This is called combination chemotherapy. Taking more than 1 type of medicine reduces the risk that the lymphoma will be resistant to the chemotherapy. That improves your chance of successful treatment. Which medicines you get and how often you get them depends on many factors. These include the type of lymphoma you have, how much cancer is in your body (your stage), and your overall health.
These medicines are most often used for B-cell lymphoma. The first 4 are often combined in a regimen called CHOP:
Doxorubicin (also called hydroxydaunorubicin)
Vincristine (or Oncovin)
Prednisone or dexamethasone
For T-cell lymphoma, these are the chemotherapy medicines most often used:
For many types of non-Hodgkin lymphoma, chemo is given along with other medicines called monoclonal antibodies. These include rituximab and brentuximab vedotin.
Chemo side effects depend on many things. These include the medicines you get, how long you take them, and how your body reacts to them. They also depend on how much cancer is in your body and your overall health. Most side effects get better or go away over time after treatment ends. Talk with your doctor or nurse about what to expect. Ask what you can do to help prevent or ease side effects.
Here are some of the more common chemo side effects:
Infections due to low white blood cell counts
Easy bruising or bleeding
Fatigue because of low red blood cell counts (anemia)
Loss of appetite
Nausea and vomiting
Constipation or diarrhea
Nerve damage, which can cause numbness, tingling, or pain in your hands or feet
You'll have a lot of blood tests done while you’re getting chemo. This is so your doctor can check that treatment isn't damaging too many healthy cells.
Make sure you ask which problems need to be reported to your doctor or nurse right away. For instance, chemo can make you more at risk for infections. So you should call your doctor if you have any of these symptoms:
Fever of 100.4°F (38.0°C) or higher
Redness, swelling, and warmth at the site of an injury
New cough or shortness of breath
Burning when you urinate
Chemo for lymphoma can also cause some other side effects. These are less common but serious:
Tumor lysis syndrome. This is caused by the breakdown of large numbers of lymphoma cells. It can affect your kidneys, heart, and nervous system. It's seen most often with the first chemo treatment for larger lymphomas. If your doctor thinks this might happen, you'll be given fluids and certain medicines to help reduce this risk.
Organ damage. This can include damage to your kidneys, liver, testicles, ovaries, brain, heart, or lungs.
Leukemia. This is a rare, but serious, late side effect of chemo. It can happen many years after treatment.
It's important to know which medicines you're taking. Write down all your medicines. Ask your healthcare team how they work, and what side effects they might have.
Talk with your healthcare providers about what problems to look for, and when to call them. For instance, chemo can make you more likely to get infections. Be sure you know what number to call if you have questions. This includes after office hours, on weekends, and on holidays.
Keep a written record of your treatment plan. Also include your side effects. Write down physical, thinking, and emotional changes. A written list will make it easier for you to remember your questions when you see your doctor. It will also make it easier for you to work with your healthcare team to manage your side effects.