Small lymphocytic lymphoma

Last medical review:

Small lymphocytic lymphoma (SLL) and chronic lymphocytic leukemia (CLL) are very similar. They are often considered different versions of the same disease and are both treated the same way.

Both SLL and CLL start in B cells. They are indolent (slow-growing) and usually occur in older adults. Sometimes SLL can change into an aggressive (fast-growing) type of NHL called diffuse large B-cell lymphoma (DLBCL). This change is called Richter transformation. If this happens, the lymphoma is treated like DLBCL. Find out more about treatments for DLBCL.

SLL and CLL differ in where the cancer cells are found. In SLL, the cancer cells are mainly found in the lymph nodes and spleen. In CLL, the cancer cells are mainly found in the blood and bone marrow.

Treatments

Your healthcare team will create a treatment plan just for you. The plan is based on your health and specific information about the cancer. What you want is also important when planning treatment.

Because SLL is very similar to CLL, doctors use the CLL International Prognostic Index (CLL-IPI) to make treatment decisions and determine your outcome (prognosis). The CLL-IPI uses specific prognostic factors to determine if SLL is likely to respond well to treatment and if it is likely to come back (relapse) after treatment. Find out more about prognosis and survival for chronic lymphocytic leukemia, including the CLL-IPI.

SLL often grows slowly and may not cause problems at first. When suggesting treatments for SLL and when they should start, your healthcare team will consider:

  • molecular characteristics of the SLL cells
  • your overall health (if chemoimmunotherapy is being considered as a treatment)
  • your age
  • factors important to you

To learn more about how SLL may be treated, go to treatments for chronic lymphocytic leukemia (CLL).

Expert review and references

  • Versha Banerji, MD, FRCPC
  • Lymphoma Canada. Understanding Chronic Lymphocytic Leukemia (CLL) & Small Lymphocytic Lymphoma (SLL) . www.lymphoma.ca. Wednesday, August 17, 2022.
  • National Comprehensive Cancer Network . NCCN Clinical Practice Guidelines in Oncology: Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (Version 2.2022) . 2022 .
  • American Society of Clinical Oncology (ASCO) . Cancer.net: Non-Hodgkin Lymphoma . 2021 .
  • Leukemia and Lymphoma Society . Non-Hodgkin Lymphoma . 2020 : www.lls.org.

Medical disclaimer

The information that the Canadian Cancer Society provides does not replace your relationship with your doctor. The information is for your general use, so be sure to talk to a qualified healthcare professional before making medical decisions or if you have questions about your health.

We do our best to make sure that the information we provide is accurate and reliable but cannot guarantee that it is error-free or complete.

The Canadian Cancer Society is not responsible for the quality of the information or services provided by other organizations and mentioned on cancer.ca, nor do we endorse any service, product, treatment or therapy.


1-888-939-3333 | cancer.ca | © 2024 Canadian Cancer Society