Chronic lymphocytic leukemia (CLL) is a slowly progressing leukemia that typically causes symptoms only in the later stages of the cancer.

CLL is the most common form of leukemia in adults. It causes the bone marrow to produce excessive amounts of B lymphocyte cells, a type of white blood cell that helps fight infections.

This article will discuss the symptoms an individual may experience as a result of CLL advancing.

In 50% to 75% of new CLL diagnoses, the person has no symptoms. It can take several yearsTrusted Source from the time of diagnosis for symptoms of this type of cancer to occur.

Once symptoms start to appear, an individual or doctor may mistake them for symptoms of other conditions. They will not appear in any particular order.

The following are some of the common symptoms indicating that a person may have CLL or that the cancer has progressed enough to manifest:

Enlarged spleen or liver

Over time, CLL can lead toTrusted Source the enlargement of the spleen or liver. This can cause a person to always have a feeling of fullness or pain in the abdomen.

An enlarged spleen can also cause the person to feel satiated after consuming a small amount of food, because the spleen pushes against the stomach.

Unexplained weight loss

Unexplained weight loss is a common symptom of several conditions. People with CLL can also experience this kind of weight loss.

They may experience it in combination with a loss of appetite.

Shortness of breath and other anemia symptoms

CLL can lead toTrusted Source a drop in a person’s red blood cell count. Doctors refer to having a low level of red blood cells as anemia.

Symptoms of anemia include:

Night sweats

Night sweats are episodes of heavy sweating that a person experiences during sleep. Various conditions, side effects of medications, and menopause can cause night sweats to occur.

Night sweats are also a common symptom of CLL.

Low blood pressure

Some CLL treatment options, such as chemotherapy, can lower a person’s blood pressure.

ResearchTrusted Source has also shown that having a low red blood cell count, which CLL can causeTrusted Source, can also reduce a person’s blood pressure.

A drop in blood pressure, along with other physical changes, may indicateTrusted Source that a person is entering the later stages of the condition.

Metastasis

As CLL progresses, it can start to spread to other tissues in the body. Health experts call this metastasis.

Metastasizing CLL may spread to areas such as the:

CLL is a slow-progressing form of cancer. It can take several yearsTrusted Source for symptoms to occur.

Doctors and researchers in the United States typically follow the Rai staging system for CLL, which classifies the condition into five stagesTrusted Source, ranging from 0 to 4.

In general, the higher the stage, the shorter a person’s life expectancy due to the increased speed of progression associated with later stages.

Stage 0

At stage 0, a person will not likely have any noticeable symptoms or clinical signs.

Their red blood cell and platelet counts will often appear normal on a blood test. They will not experience enlargement of the liver, spleen, or lymph nodes.

However, a blood test will reveal lymphocytosis, which is when there are too many lymphocytes in a person’s blood.

A person with lymphocytosis has an absolute lymphocyte count of more than 4,000 lymphocytes per microliterTrusted Source.

Stage 1

At stage 1, a person will also not have many noticeable symptoms.

However, they will likely experience enlarged lymph nodes. They may also have slightly lower red blood cell and platelet counts.

A person with stage 1 CLL may start to experience increased fatigue.

As with stage 0, they will have lymphocytosis.

Stage 2

At stage 2, a person will continue to have elevated lymphocytes in their blood. Their levels of both red blood cells and platelets will still be close to normal.

They will likely have an enlarged spleen. They may or may not experience enlargement of their liver or lymph nodes.

A person may also experience new or worsening fatigue.

Stage 3

At stage 3, a person will typically start to have low red blood cell counts.

This can lead to anemia. For the symptoms of this condition, see the “Shortness of breath and other anemia symptoms” section above.

The lymph nodes, spleen, or liver may or may not be enlarged, and platelet counts will be close to normal. A person will continue to have high lymphocyte counts.

Stage 4

Stage 4 is the last stage of CLL. Like the other stages, it is associated with high lymphocyte counts.

A person will have enlargement of the lymph nodes, spleen, or liver. Their red blood cell counts may be low or close to normal.

However, they will likely have thrombocytopenia (a low platelet count), which can causeTrusted Source:

A person may also experience:

Learn more about the staging systems for CLL.

In a person’s final days of life, they may go through some physical changes and show new or worsening symptoms.

According to the National Cancer Institute (NCI)Trusted Source, these symptoms may include:

Treatment at this stage involves making a person as comfortable as possible. It may be helpful for an individual to receive palliative or hospice care.

Mental health resources

People receiving end of life care, as well as those around them, may require advice or mental health support. Resources and help are available.

The NCI guideTrusted Source to end of life care provides information and useful tips. For additional research-backed resources that may help, visit our dedicated mental health hub.

In 2% to 10%Trusted Source of CLL cases, CLL may go through what health experts refer to as Richter’s transformation (RT). This occurs when the small cells associated with CLL transform into larger, more aggressive cells.

In most cases, the cells transform into large B cell lymphoma, a more aggressive form of non-Hodgkin’s lymphoma. Rarely, CLL can transform into Hodgkin’s lymphoma, another aggressive cancer type.

RT does not typically occur in the early stages of CLL, so it is not generally possible for doctors to diagnose it early. Health experts do not know the cause of RT.

Symptoms of RT from CLL may include:

  • enlarged lymph nodes
  • unexplained weight loss
  • night sweats
  • fever

There is currently no cure for CLL. However, individuals with the condition can extend their life span by taking steps to support their overall health.

It is best for people to work closely with a doctor, even during the “watchful waiting” phase, which involves closely monitoring a person’s condition but not giving treatment until symptoms appear. It is important to attend all medical appointments and closely follow treatment advice.

The following may also help improve a person’s quality of life:

A doctor may be able to provide support group recommendations. Alternatively, people can use the American Cancer Society’sTrusted Source support group finder.

Leukemia resources

Visit our dedicated hub for more research-backed information and in-depth resources on leukemia.

Chronic lymphocytic leukemia (CLL) is a common form of leukemia in adults. Individuals often receive a diagnosis after a routine blood test and may not experience any symptoms for several years following diagnosis.

The appearance of symptoms can indicate that a person’s condition is worsening. Treatment may help with alleviating these symptoms and extending a person’s life span.