About Acute Lymphocytic Leukemia (ALL) in Children
ALL in children is caused by genetic alterations (changes in the DNA) in the immature blood cells in the bone marrow. These abnormalities may lead to too many immature lymphocytes, which is a type of white blood cell. The accumulation of these cancerous cells in the bone marrow affects the bone marrow’s ability to produce red blood cells, white blood cells, and platelets.
Exactly what causes the genetic alterations to occur is not known. There are some factors that may be associated with development of ALL. Some of these risk factors are non-modifiable, which means they are factors a person can’t change or control. Others are modifiable risk factors, which means they are factors a person potentially can change or control to reduce their chances of developing a disease.
Non-modifiable risk factors for ALL in children include:
- Previous exposure to ionizing radiation before birth. X-rays are an example of ionizing radiation.
- Certain genetic conditions like Down syndrome, neurofibromatosis type 1, Bloom syndrome, Fanconi anemia, Ataxia-telangiectasia, and Li-Fraumeni syndrome.
- Past treatment with chemotherapy.
Modifiable risk factors for ALL in children are not well-established. However, research suggests that exposure to certain environmental factors like pesticides or chemicals may play a role. It's important to note that further studies are needed to fully understand the modifiable risk factors associated with ALL in children.
Remember, the information provided is based on general knowledge about ALL in children. It's always recommended to consult with a healthcare professional for personalized advice and guidance.
Symptoms of ALL in children can include:
- Fever for no known reason
- Lethargy
- Frequent infections
- Abnormal bleeding, such as excessive bleeding from small wounds
- Easy bruising
- Bleeding of gums
- Heavy menstrual bleeding (in girls)
- Frequent nosebleeds
- Swollen liver or spleen
- Swollen lymph nodes
- Pain in the spine or long bones
- Anemia symptoms, such as shortness of breath, headaches, irritability, loss of appetite, numbness and tingling in hands and feet, weakness, severe fatigue, paleness, dizziness, and lightheadedness
As the disease progresses, other symptoms may occur:
- Bone or joint pain
- Painless lumps in the neck, underarm, stomach, or groin
- Weakness
- Fatigue
- Loss of appetite
It's important to note that these symptoms can vary from person to person. Many of these symptoms may occur with other conditions. If your child experience any potential signs or symptoms of ALL, it is recommended to see a doctor for further evaluation.
To diagnose ALL in children, the following examinations, tests, and procedures are commonly performed:
- Physical exam and health history: The healthcare provider will collect information about the child’s symptoms, medical history, medications, and family medical history. They will perform a physical exam for general signs of health and check for any unusual lumps or signs of ALL.
- Blood tests: Blood samples will be collected and analyzed
- Complete blood count (CBC) with differential: A blood sample is drawn to check the number and types of white blood cells, red blood cells, platelets, and hemoglobin levels.
- Blood chemistry studies: Another blood sample is checked to measure substances released by organs and tissues in the body.
- Cytogenic analysis: This laboratory test looks for chromosomal abnormalities that may be associated with ALL.
- Immunophenotyping: This laboratory test looks for cancer cells and can be used to identify the type of leukemia.
- Bone marrow biopsy: A sample of bone marrow tissue and bone is collected from the hipbone or breastbone using a needle. A pathologist analyzes the sample under a microscope to look for abnormal cells as a sign of leukemia.
If leukemia is found, additional examinations, tests or procedures may be performed to determine the severity of ALL. These may include:
- Imaging studies: X-rays, CT scan, or MRI scan may be performed to see if leukemia cells have spread to other parts of the body, such as the brain or testicles.
- Lumbar puncture: This procedure, also called a spinal tap, collects a sample of cerebrospinal fluid (CSF) from the spine. CSF is checked to see if ALL has spread to the brain or spinal cord.
Remember, these are general procedures. The specific tests and procedures may vary based on individual cases. It's important to consult with a healthcare professional for personalized advice.
The goals of treatment for ALL in children are to achieve remission, prevent the spread of leukemia cells, and maintain long-term remission. Treatment is usually done in phases and may involve combination treatments.
Treatment of ALL in children may involve medications, radiation therapy, or stem cell transplant.
Medication:
- Chemotherapy: Chemotherapy is the primary treatment for ALL in children. It uses drugs to kill leukemia cells or stop their growth.
- Targeted Therapy: This treatment uses drugs that specifically target cancer cells, while sparing healthy cells.
- Immunotherapy: This treatment boost the body's immune system to recognize and destroy cancer cells.
Therapeutic Procedures:
- Radiation Therapy: Uses high-energy beams to kill cancer cells or shrink tumors.
- Stem Cell Transplant: Replaces damaged bone marrow with healthy stem cells to help rebuild the immune system.
Self-care and Health Behavior Changes: Treatment of ALL in children may necessitate changes in lifestyle and health behaviors, such as:
- Taking medications as prescribed: Adhering to the prescribed chemotherapy regimen and associated medications is crucial for successful treatment.
- Maintaining good hygiene: Because ALL and its treatment may cause immunosuppression, which lowers a person’s ability to fight infections, it is important to reduce the risk of infection by practicing proper handwashing and avoiding sick individuals.
Clinical Trials: Participation in research studies testing new treatments may be an option. It is important to discuss potential clinical trial options with the healthcare team to determine if a clinical trial is an option based on individual factors.
Each treatment works differently to achieve the goals of ALL treatment. Chemotherapy kills leukemia cells throughout the body, while radiation therapy targets specific areas like the brain or testicles. Targeted therapy focuses on specific molecules present in cancer cells. Stem cell transplant replaces damaged bone marrow with healthy stem cells, restoring normal blood cell production. Immunotherapy enhances the immune system's ability to recognize and attack cancer cells.
It's important to note that treatment plans are individualized based on factors such as age, risk level, and response to initial therapy. Discussing these options with a pediatric oncologist is crucial for personalized care.