Diagnosing Acute Lymphocytic Leukemia (ALL)
Acute lymphocytic leukemia (ALL) is a type of cancer that affects the bone marrow where blood cells are made. ALL causes the bone marrow to make too many white blood cells.
To diagnose ALL, doctors use a combination of examinations, screening tests, and procedures. These help confirm the diagnosis and determine the type, severity, or stage of the disease. Specialists involved in diagnosing ALL may include:
- Hematologists: Doctors who specialize in blood disorders.
- Oncologists: Doctors who specialize in cancer.
- Pathologists: Doctors who study tissues and cells.
- Radiologists: Doctors who specialize in analyzing imaging studies to detect abnormalities inside the body.
Examinations, tests or procedures for diagnosing ALL may include:
- Medical History and Physical Examination: The healthcare professional will gather information about your symptoms, medical conditions and history, medications, and family history. They will perform a physical examination that will include looking for signs of ALL, such as swollen lymph nodes or bruising.
- Complete Blood Count (CBC): A blood test called a complete blood count is used to detect abnormalities in the blood cells. It measures the levels of red blood cells, white blood cells, and platelets in the blood. Abnormal levels can indicate the presence of ALL.
- Bone Marrow Biopsy and Aspiration: This procedure allows doctors to examine a small amount of bone marrow tissue. A needle is used to extract a sample from the bone marrow, usually from the hip bone. The sample is then examined under a microscope to look for leukemic cells.
- Blood Smear: In this test, a drop of blood is smeared across a surface and examined under a microscope. This helps doctors identify any cell changes that indicate the presence of leukemia.
- Flow Cytometry: Flow cytometry is a specialized test that analyzes single cells using a special machine. It helps determine the type of leukemia by exposing blood cells to antibodies that attach themselves differently depending on whether cancer is present or not. This test also measures DNA levels in cells, which can indicate the potential speed of cancer growth.
- Immunophenotyping: This laboratory test uses a sample of blood or bone marrow to differentiate between different types of leukemia.
- Lymph Node Biopsy: During a lymph node biopsy, a sample or an entire enlarged lymph node may be removed to see if the leukemia has spread beyond the bone marrow.
- Lumbar Puncture: If there is suspicion that ALL has spread to the central nervous system, a lumbar puncture may be performed. This involves inserting a needle into the lower spine to collect a small fluid sample for analysis.
- Imaging Tests: Imaging tests like computed tomography (CT) scans and chest X-rays may be used to see if ALL has spread to internal organs or if there are signs of swollen lymph nodes in the chest.
In summary, diagnosing ALL involves physical and imaging examinations, tests like complete blood count and and specialized tests for leukemia, and procedures like bone marrow biopsy and aspiration. These tests help confirm the diagnosis of ALL and determine its type and severity. Other examinations, tests or procedures may be performed based on initial findings and individual factors. It is important to work with your healthcare team for personalized advice regarding your specific situation.