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Cancer starts when cells in the body begin to grow out of control. Cells in nearly any part of the body can become cancer.
Rhabdomyosarcoma (RMS) is a cancer that starts in very early forms of muscle cells. Most often, RMS happens in children, but teens and adults can get it, too.
There are different types of RMS. Your doctor can tell you more about the type you or your child has.
RMS can start just about anywhere in the body. But the most common places are:
Sometimes cancer cells from RMS can spread to other parts of the body, such as the lungs. When cancer cells do this, it’s called metastasis.
Even if RMS spreads to the lungs (or to any other place), it’s still called RMS. It’s not called lung cancer unless it starts from cells in the lung.
RMS can start in almost any part of the body, so each person might have different symptoms. One of the most common symptoms is a lump or swelling where the tumor is, which might be painful and get worse over time. Tumors in the head might cause vision problems or headaches. Tumors in lower parts of the body might cause bleeding, belly pain, or vomiting.
If you or your child has symptoms that could be from RMS (or another type of tumor), the doctor will want to get a complete medical history to find out more about the symptoms, and will do a physical exam. Tests might be needed as well.
CT scan: This test uses x-rays to make detailed pictures of a person's insides. It can often show soft tumors, such as RMS. It can also show if cancer has spread to other parts of the body.
MRI scan: MRIs use radio waves and strong magnets instead of x-rays to make detailed pictures. MRIs make it easier to see the extent of the tumor. This can help the doctor plan for a biopsy (see below) and surgery.
Bone scan: A bone scan can help show if a cancer has spread to the bones. This test is useful because it can show all of the bones in the body at once.
PET scan: PET scans use a special kind of sugar that can be seen inside the body with a special camera. If there is cancer, this sugar shows up as “hot spots” where the cancer is found. This test can help show if something that’s seen on another test is cancer.
Ultrasound: This test uses sound waves and their echoes to make pictures of your insides. It is sometimes used to look at tumors in the belly.
X-rays: X-rays are good at showing bones, but they’re not as good for seeing other parts of the body. An x-ray is often the first test done if a doctor thinks a tumor might be in a bone, but it’s not as helpful for other types of tumors.
Biopsy of the tumor: In a biopsy, the doctor takes out small pieces of the suspected tumor. This is most often done during surgery, but it can also be done with a thin, hollow needle. The biopsy samples are checked for cancer cells, and other lab tests might be done on them as well. A biopsy is the only way to tell for sure if it is RMS.
Bone marrow biopsy: If RMS is found, a bone marrow biopsy is often done to see if the cancer has spread to the bone marrow (the soft, inner part of certain bones). This test is done with a hollow needle that is put into the bone marrow, usually in the hip bone. The test can be done either by itself or during surgery to biopsy or treat the main RMS tumor.
If you or your child has RMS, the doctor will want to find out some key pieces of information to help decide how to treat it. These include:
Once these things are known, they’re used to put each patient into a risk group (low, intermediate, or high), which is then used to guide treatment. The higher the risk, the more intense the treatment will likely need to be.
We know this can be confusing. If you have any questions about the stages or risk groups, ask the doctor or nurse to explain it to you.
The main treatments for RMS are:
The treatment plan will depend on:
Surgery includes both the biopsy to tell for sure that it’s cancer and the surgery to take out the tumor(s).
Surgery to remove the tumor is part of treatment for nearly all patients with RMS if it can be done safely. If not, other treatments (like chemo and/or radiation) might be done first. If the tumor shrinks enough, surgery can be done at this point.
The type of surgery done (and the type of surgeon who does it) depends on where the tumor is. Ask the doctor what kind of surgery will be needed and what to expect.
Any type of surgery can have risks and side effects. Be sure to ask the doctor what to expect. If you have problems, let your doctors know.
Chemo is the use of drugs to fight cancer. These drugs go into the blood and spread all over the body. Chemo is important for all patients with RMS. If it’s not given, the cancer is much more likely to come back.
To treat RMS, 2 or more chemo drugs are given. Chemo is typically given once a week for the first few months, and then less often. The total length of chemo often ranges from 6 months to a year.
Chemo can make a person feel very tired, sick to their stomach, and can cause their hair to fall out. It can also cause mouth sores, loose stools, and a higher chance of infection, bleeding, and bruising. Some chemo drugs can also harm the nerves, bladder, or heart.
There are ways to lessen and treat most chemo side effects. Be sure to tell the cancer care team about any side effects so they can help.
Radiation uses high-energy rays (like x-rays) to kill cancer cells. It can be used after surgery to try to kill any cancer cells that might have been left behind. Or it might be used instead of surgery if all of the cancer can’t be removed. Radiation can also help treat symptoms like pain and swelling if the cancer has come back and more surgery can’t be done.
Getting radiation is a lot like getting an x-ray. Although the radiation is stronger, it is still painless. Treatments are usually given 5 days a week for several weeks.
If the doctor suggests radiation treatment, ask about what side effects might happen. Side effects depend on the type of radiation that’s used and the part of the body being treated. Common side effects of radiation are:
Radiation also can cause some long-term side effects in growing children, such as slowed bone growth. Talk to the cancer care team about what to expect.
A stem cell transplant (SCT) lets doctors use very high doses of chemo to kill the RMS cells. The high doses of these drugs destroy the bone marrow, which keeps new blood cells from being made. But stem cells given after the chemo can bring back the blood-making bone marrow stem cells.
This type of treatment is being studied for RMS that is hard to cure with other treatments. But it can cause serious side effects, and so far it's not clear if it’s better than other treatments. Because of this, many doctors advise that a stem cell transplant be done only as part of a clinical trial.
Clinical trials are research studies that test new drugs or other treatments in people. They compare standard treatments with others that may be better.
Clinical trials are one way to get the newest cancer treatment. They are the best way for doctors to find better ways to treat cancer. But they might not be right for everyone. If you do sign up for a clinical trial, you can always stop at any time.
If you would like to learn more about clinical trials, start by asking your doctor if your clinic or hospital conducts clinical trials. See Clinical Trials to learn more.
You might hear about other ways to treat the cancer or its symptoms. These may not always be standard medical treatments. These treatments may be vitamins, herbs, special diets, and other things.
Some of these might help, but many have not been tested. Some have been shown not to help. A few have even been found to be harmful. Talk to your doctor about anything you’re thinking about using, whether it’s a vitamin, a special diet, or anything else.
You’ll be glad when treatment is over. But it can be hard not to worry about cancer coming back. Even when cancer never comes back, people still worry about it. For many years after treatment ends, it’s still important to see the cancer doctor. Be sure to go to all of these follow-up visits. Exams and maybe other tests will be done to see if the cancer has come back and to check for late effects from cancer treatments.
At first, these visits may be every month or so. Then, as long as no cancer is found, the visits are needed less often.
Anyone with cancer, their caregivers, families, and friends, can benefit from help and support. The American Cancer Society offers the Cancer Survivors Network (CSN), a safe place to connect with others who share similar interests and experiences. We also partner with CaringBridge, a free online tool that helps people dealing with illnesses like cancer stay in touch with their friends, family members, and support network by creating their own personal page where they share their journey and health updates.
Our team is made up of doctors and oncology certified nurses with deep knowledge of cancer care as well as journalists, editors, and translators with extensive experience in medical writing.
Biopsy (BY-op-see): Taking out a small piece of tissue to see if there are cancer cells in it.
Orthopedic surgeon (or-thuh-PEE-dik): A surgeon who specializes in diseases and injuries of the muscles, joints, and bones. This is often the type of surgeon who treats RMS.
Metastasis (muh-TAS-tuh-sis): The spread of cancer from where it started to other places in the body.
Sarcoma (sar-KOH-muh): A type of cancer that starts in the muscles, fat, bones, the linings of joints, or blood vessels. RMS is a type of sarcoma.
Last Revised: July 16, 2018
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