It is best to read this information with our general information about chronic lymphocytic leukaemia (CLL). If you have any more questions, you can ask your doctor or nurse at the hospital where you are having treatment.
Small lymphocytic lymphoma (SLL) is a slow-growing type of non-Hodgkin lymphoma (NHL). It is similar to and treated in the same way as CLL.
It develops when B-cells (also called B-lymphocytes) become abnormal. B-cells are white blood cells that fight infection.
The abnormal B-cells (lymphoma cells) build up in lymph nodes.