CareTalk: Blog for Cancer and Blood Disorders
Get insights and inspiration from Nemours’ experts in Hematology/Oncology.
The term leukemia refers to cancers of the white blood cells (also called leukocytes or WBCs). Leukemias, as a group, make up about a quarter of all pediatric cancers. Luckily, with treatment, most children with leukemia will be free of the disease without it coming back.
Leukemias start in the bone marrow — the soft tissue found inside bones that produces blood cells. When a child is diagnosed with leukemia, it’s because the white blood cells in the body are producing abnormally. These cells (also known as blasts) start to crowd out the healthy cells in the bone marrow. Eventually, the healthy cells have no place to go, so they stop producing. When a child's body no longer produces enough healthy white blood cells it can cause anemia, swollen lymph nodes, and other symptoms of leukemia in children.
Leukemia is classified as being either acute (meaning it’s rapidly developing) or chronic (meaning it’s slowly developing). About 98% of pediatric leukemias are acute.
Although the symptoms of leukemia in each individual child can vary, common symptoms of leukemia in children include:
IMPORTANT NOTE: Instances of the symptoms of leukemia in children listed above, either together or on their own, do not automatically mean that a child has leukemia or any other kind of cancer. Any or all of these symptoms could be a sign of something else.
One of our Nemours pediatric hematologists-oncologists (doctors who treat blood disorders and cancers) will conduct a physical examination on your child to check for symptoms of leukemia in children such as signs of infection, anemia, abnormal bleeding, and swollen lymph nodes.
The doctor will also feel your child's abdomen to see if the liver or spleen is enlarged. We’ll also take a complete medical history by asking about your child’s symptoms, past health, your family's health history, any medications your child is taking, allergies, etc.
After this exam, the doctor will order a CBC (complete blood count) to measure the numbers of white cells, red cells, and platelets in your child's blood. Your child’s blood chemistries will also be checked.
Then, depending on what we find in the exam and blood tests, your child also may need a:
We know that tests can be scary – for you and your child. Whatever kind of tests your child might need, know that your Nemours pediatric leukemia care team will do everything we can to make the experience as comfortable as possible – physically and emotionally. We’ll give sedation or anesthesia as needed and offer support and guidance at every step.
Depending on your child’s age, overall health, extent of the disease, and other factors, treatment may include one or a combination of the following:
At Nemours, we know that getting a cancer diagnosis can be very frightening and overwhelming for your whole family. That’s why Nemours’ board-certified pediatric hematologists-oncologists, specialty nurses, cancer researchers, and other cancer experts are focused on helping not only your child, but your family, as well.
From diagnosis to treatment (and beyond) we’ll be here to help guide your family through your pediatric leukemia journey – and to strive and hope, with you, for a better tomorrow.
The complete blood count (CBC) is a common blood test that evaluates the three major types of cells in the blood: red blood cells, white blood cells, and platelets.
A CBC may be ordered as part of a routine checkup, or if your child is feeling more tired than usual, seems to have an infection, or has unexplained bruising or bleeding.
The CBC can also test for loss of blood, abnormalities in the production or destruction of blood cells, acute and chronic infections, allergies, and problems with blood clotting.
No special preparations are needed. Having your child wear a short-sleeve shirt on the day of the test can make things easier for the technician who will be drawing blood.
Not much blood is drawn in a CBC. A health professional will usually draw the blood from a vein. For an infant, the blood may be obtained by puncturing the heel with a small needle (lancet). If the blood is being drawn from a vein, the skin surface is cleaned with antiseptic, and an elastic band (tourniquet) is placed around the upper arm to apply pressure and cause the veins to swell with blood. A needle is inserted into a vein (usually in the arm inside of the elbow or on the back of the hand) and blood is withdrawn and collected in a vial or syringe.
After the procedure, the elastic band is removed. Once the blood has been collected, the needle is removed and the area is covered with cotton or a bandage to stop the bleeding. Collecting blood for this test will only take a few minutes.
Either method (heel sticking or vein withdrawal) of collecting a sample of blood is only temporarily uncomfortable and can feel like a quick pinprick. Afterward, there may be some mild bruising, which should go away in a few days.
The blood sample will be processed by a machine. Parts of the CBC results can be available in minutes in an emergency, but more commonly the full test results come after a few hours or the next day.
If a CBC test points to anemia, infection, or other concerns, your child's doctor may repeat the test just to be sure. If the second set of test results come back the same, your doctor will likely order further lab tests for your child to determine what's causing the problem and how to treat it.
The CBC test is considered a safe procedure. However, as with many medical tests, there are some problems that can occur with having blood drawn, such as:
Having a blood test is relatively painless. Still, many kids are afraid of needles. Explaining the test in terms your child can understand might help ease some of the fear.
Allow your child to ask the technician any questions he or she might have. Tell your child to try to relax and stay still during the procedure, as tensing muscles and moving can make it harder and more painful to draw blood. It also may help if your child looks away when the needle is being inserted into the skin.
If you have questions about the CBC test, contact your doctor.
Reviewed by: Steven Dowshen, MD
Date reviewed: February 2011