Leukemia / Blood Cancer

• Acute Lymphoblastic Leukemia
• Acute Myeloid Leukemia
• Chronic Myeloid Leukemia
• Chronic Lymphocytic Leukemia / Lymphoma

Leukemia occurs in different forms. These forms differ by the affected cell line and the course of the disease. The cell line may be myeloid or lymphatic. The disease course may be acute or chronic. The exact classification is very important. It affects how quickly the disease starts, which symptoms occur and which treatment is suitable. Acute leukemias often progress quickly and need immediate treatment. Chronic forms often progress slowly over months or years. At first, they may even go unnoticed.

Acute lymphoblastic leukemia, also called ALL, is less common in adults than other forms. It accounts for about 15 to 20 percent of acute leukemias in adults. ALL develops from immature lymphatic precursor cells. It grows very quickly and should be treated promptly to help prevent disease progression. Because it is less common than myeloid forms, it is often diagnosed in adults only after specific tests.

AML stands for acute myeloid leukemia. It is one of the most common types of leukemia in adults. It develops in the bone marrow from abnormal myeloid precursor cells. It quickly causes a lack of functional blood cells. This can lead to symptoms such as tiredness, frequent infections and a tendency to bleed. Because AML progresses quickly, it needs timely and targeted treatment after diagnosis.

Chronic myeloid leukemia, also called CML, accounts for about 15 percent of leukemias in adults on average. In the early stages, it is usually slow and often causes few symptoms. CML typically causes excessive production of mature myeloid cells. In most cases, it is linked to a specific genetic change called the BCR-ABL fusion. Today, targeted therapies can often control the disease well over the long term.

CLL, or chronic lymphocytic leukemia, is the most common form of leukemia in adults. It is also classified as a low-grade lymphoma. Chronic lymphocytic leukemia develops from mature B lymphocytes. These cells multiply in an uncontrolled way and have limited function. At first, symptoms are often mild. They can vary as the disease progresses. This is why CLL is often found by chance. The course of CLL can also vary widely. It may remain stable for a long time or worsen and then require targeted treatment.

The cause of leukemia cannot always be clearly identified. Leukemia develops through genetic changes in precursor cells of the bone marrow. These changes cause the cells to multiply uncontrollably. They also lose the ability to mature normally. The changes may occur by chance. They may also arise from errors during cell division. In some cases, external or internal factors during life may contribute. Leukemia usually does not have one clear cause. It is more often based on several interacting factors.

Important and well-documented risk factors include increased radiation exposure. This can occur after previous radiation therapy or high radiation doses in the environment. Certain chemical substances can also increase the risk of leukemia. These include benzene and long-term exposure to organic solvents. Some forms of leukemia may also occur after chemotherapy. This is because chemotherapy drugs can affect the genetic material of cells.

Genetic factors also play an important role in leukemia development. Congenital syndromes such as Down syndrome are linked to a clearly higher leukemia risk. Rare DNA repair disorders can also increase the risk. Diseases of the immune system or chronic inflammation may also contribute to leukemia development.

In many cases, affected people do not have clearly defined risk factors. Leukemia can therefore also develop without an identifiable cause.

Leukemia symptoms can vary widely. Depending on the form, they may develop suddenly or gradually over weeks to months. At first, symptoms of leukemia are often hard to classify. They are often non-specific. Many people first think of stress, infections or exhaustion. These general symptoms are caused by disturbed blood formation. Abnormal cells increasingly replace healthy bone marrow. As a result, the body has fewer functional red blood cells, white blood cells and platelets. This causes symptoms in three main areas: oxygen supply, immune defense and blood clotting.

Typical symptoms caused by anemia in leukemia include:

• persistent tiredness
• reduced performance
• pale skin
• rapid exhaustion
• shortness of breath with mild exertion

Typical symptoms caused by a lack of functional white blood cells include:

• increased susceptibility to infections or unusually severe infections
• fever without a clear cause

Typical symptoms caused by a lack of platelets include:

• increased bleeding tendency, such as nosebleeds, bleeding gums or small pinpoint bleeding spots in the skin
• unusual tendency to bruise

Characteristic warning signs of leukemia include repeated or long-lasting infections. Other signs may include unexplained fever, night sweats and unexplained weight loss. Bone or joint pain can also occur. Swollen lymph nodes or an enlarged spleen may be felt. Many of these symptoms are non-specific. They should be checked by a doctor if they persist or worsen. They can provide important clues to an underlying disease. They may also support an early diagnosis.

The diagnosis of leukemia takes place in several steps. The aim is to confirm the disease and identify the exact type of leukemia. At the beginning, symptoms are often non-specific. This is why blood tests are usually used early in the diagnostic process. They can show typical changes in blood cells. However, the diagnosis should not rely only on abnormal blood values. It also includes laboratory results, microscopic examinations and molecular genetic analyses.

A first sign of leukemia often comes from a blood test. The blood count may show unusually high or low values in individual cell lines. This may include a strongly increased number of immature white blood cells. It may also show changes in the normal blood composition. The gold standard for diagnosing leukemia is bone marrow examination. The bone marrow is the original site where leukemia develops. A biopsy can therefore confirm the disease. During bone marrow aspiration, small samples are taken. They are then examined histologically and cytologically. This can show whether leukemia cells are present. It can also show how strongly they replace healthy bone marrow.

Immunological and genetic procedures are also used. These include immunophenotyping, chromosome analyses and further molecular genetic tests. These methods can identify the exact leukemia type. They can also detect mutations or genetic changes that influence treatment planning.

Imaging procedures may also be used. These include ultrasound diagnostics, CT or MRI. They help assess the involvement of organs such as the spleen, liver or lymph nodes. This is especially useful when symptoms or swellings are present. Overall, a combination of several examinations can clearly diagnose and classify the disease. This helps start the right treatment.

Treatment for blood cancer always depends on the exact type of leukemia. It also depends on the genetic profile of the leukemia cells and the person’s general health. The aim is to reduce abnormal cells as effectively as possible. Treatment also aims to support normal blood formation and reduce the risk of relapse. Acute forms of leukemia need immediate treatment. Chronic leukemias may first be monitored closely, depending on the stage. Treatment then starts when needed.

The most common treatments include intensive chemotherapy. Its aim is to quickly and effectively reduce leukemia blasts in the bone marrow. Targeted therapies may be used in addition or as an alternative. They use specific genetic changes in cancer cells to treat leukemia. A typical example is tyrosine kinase inhibitors, which are used in chronic myeloid leukemia. In recent years, immunotherapies have also become more important. These include monoclonal antibodies and CAR T-cell therapies. They use the body’s immune system to recognize and destroy leukemia cells. In certain acute leukemias, a stem cell or bone marrow transplant may be necessary. It can help stabilize blood formation and may improve the chance of long-term remission or cure.

In leukemia, complementary medicine is increasingly used alongside conventional medical treatment. It may help patients cope better with the disease, treatment side effects and emotional stress. These methods can help control symptoms and improve quality of life. Elements of Traditional Chinese Medicine (TCM) are often used as supportive approaches. Acupuncture in particular has become established in oncology. It may help relieve nausea, pain, sleep disorders or nervousness.

Qigong or Tai Chi may also be used as supportive methods. These are gentle movement and breathing exercises. They can support body awareness, balance and relaxation.

Phytotherapy in TCM uses specific herbs. Their effects on leukemia cells have not yet been fully confirmed scientifically. There is currently not enough clinical data to support a direct anti-cancer effect in leukemia. These preparations may interact with chemotherapy or targeted medications. For this reason, they should only be used under strict medical supervision. Still, phytotherapy may have positive effects in relieving accompanying symptoms during cancer treatment.

The prognosis of leukemia mainly depends on the leukemia type, disease stage, age and genetic profile of the cancer cells. Acute leukemias may be curable, depending on genetic risk and individual response to treatment. This is more likely when treatment starts early and is intensive enough. Chronic leukemias can often be controlled for many years with modern therapies. In many cases, this allows a largely normal life. Targeted medications in particular have clearly improved the long-term prognosis of certain leukemias. In some cases, they have made it possible to reach an almost normal life expectancy.

Today, leukemia belongs to the group of cancers with many effective treatment options. These options are based on individual treatment strategies. The chance of cure depends on several factors. However, new medications and innovative therapies have greatly improved treatment outcomes.

The information listed contains relevant topics and serves to improve understanding.