Doctors group B-cell lymphomas based on ... because the treatments are different. Lymphoplasmacytic lymphoma is a rare and slow-growing lymphoma, but it can change into a fast-growing form.

WM, also known as lymphoplasmacytic lymphoma ... It’s a type of non-Hodgkin lymphoma in which cancer cells make excessive amounts of an abnormal protein called a macroglobulin.

Waldenström’s is a type of non-Hodgkin lymphoma that grows slowly. It’s a rare white blood cell cancer that often starts in bone marrow. It’s also called lymphoplasmacytic lymphoma. If you have MGUS, ...