Leukaemias are grouped in two ways: the type of white blood cell affected - lymphoid or myeloid; and how quickly the disease develops and gets worse. Acute leukaemia appears suddenly and grows quickly while chronic leukaemia appears gradually and develops slowly over months to years.
Acute leukemia symptoms can often appear suddenly
With acute leukemia, symptoms tend to develop very quickly. You may suddenly spike a fever that won't go away, develop an infection for no apparent reason, or start bleeding spontaneously from your nose or gums and not be able to stop it.
Causes of acute myeloid leukaemia
Acute myeloid leukaemia (AML) is caused by a DNA mutation in the stem cells in your bone marrow that produce red blood cells, platelets and infection-fighting white blood cells. The mutation causes the stem cells to produce many more white blood cells that are needed.
Acute myeloid leukemia (AML) is a cancer of the blood and bone marrow. It is the most common type of acute leukemia in adults. This type of cancer usually gets worse quickly if it is not treated. AML is also called acute myelogenous leukemia and acute nonlymphocytic leukemia.
Acute lymphoblastic leukaemia (ALL) is a type of blood cancer. It starts from white blood cells called lymphocytes in the bone marrow. The bone marrow is the soft inner part of the bones, where new blood cells are made. ALL usually develops quickly over days or weeks.
Chronic leukemia involves more-mature blood cells. These blood cells replicate or accumulate more slowly and can function normally for a period of time. Some forms of chronic leukemia initially produce no early symptoms and can go unnoticed or undiagnosed for years.
Your doctor will conduct a complete blood count (CBC) to determine if you have leukemia. This test may reveal if you have leukemic cells. Abnormal levels of white blood cells and abnormally low red blood cell or platelet counts can also indicate leukemia.
If acute leukemia is left untreated, a person with leukemia becomes increasingly susceptible to fatigue, excessive bleeding and infections until, finally, the body becomes virtually defenseless, making every minor injury or infection very serious. Leukemia may be fatal.
Who gets leukemia? Although it is often thought of as a children's disease, most cases of leukemia occur in older adults. More than half of all leukemia cases occur in people over the age of 65.
Acute leukemia may cause signs and symptoms that are similar to the flu. They come on suddenly within days or weeks. Chronic leukemia often causes only a few symptoms or none at all. Signs and symptoms usually develop gradually.
Clinical and epidemiological studies have shown that stress-related biobehavioral factors are associated with accelerated progression of several types of cancer, including solid epithelial tumors and hematopoietic tumors such as leukemia (Antoni et al., 2006; Chida et al., 2008).
Some signs of leukemia, like night sweats, fever, fatigue and achiness, resemble flu-like symptoms. Unlike symptoms of the flu, which generally subside as patients get better, leukemia symptoms generally last longer than two weeks, and may include sudden weight loss, bone and joint pain and easy bleeding or bruising.
Age: The risk of most leukemias increases with age. The median age of a patient diagnosed with acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL) or chronic myeloid leukemia (CML) is 65 years and older. However, most cases of acute lymphocytic leukemia (ALL) occur in people under 20 years old.
Common signs and symptoms of leukemia include: Fatigue, tiring easily. Fever or night sweats. Frequent infections.
If caught early, leukemia can be cured by undergoing several cancer treatments.
Blood tests are essential to accurate diagnosis of this complex disease. These tests can show whether you have leukemia cells or abnormal levels of normal cells: Blood smear: With this test, we take a drop of blood and look at it under a microscope.
Often referred to as a “silent disease,” CLL can be difficult to diagnose, because people often don't have any symptoms until later in the disease, and others have symptoms that resemble signs of other conditions, such as a cold.
Leukemia symptoms commonly include fatigue, breathlessness, infections, and bruising or bleeding more easily. Leukemia* symptoms vary depending on the type of leukemia. Not everyone gets the same symptoms, and you won't necessarily have all of the symptoms. Most people with these symptoms won't have leukemia.
Leukemia starts in the soft, inner part of the bones (bone marrow), but often moves quickly into the blood. It can then spread to other parts of the body, such as the lymph nodes, spleen, liver, central nervous system and other organs.
When is a patient tested for leukemia? "A patient may be tested for leukemia if he or she has unexplained weight loss, night sweats or fatigue, or if he or she bruises or bleeds easily," Dr. Siddon says. "Sometimes routine blood work shows an unexplained elevated number of white blood cells."
Stage 1 – A patient has high levels of white blood cells and enlarged lymph nodes. Stage 2 – A patient has high levels of white blood cells and is anemic. He or she may also have enlarged lymph nodes. Stage 3 – A patient has high levels of white blood cells and is anemic.
During the progression of leukemia, white blood cells (neoplastic leukocytes) found in bone marrow may begin to filter into the layers of the skin, resulting in skin lesions. “It looks like red-brown to purple firm bumps or nodules and represents the leukemia cells depositing in the skin,” Forrestel says.