“Sometimes, Waldenstrom macroglobulinemia (WM) isn’t causing any symptoms when it’s first found. Instead, it’s found when the person has blood tests done for some other reason. WM found this way is sometimes called asymptomatic or smoldering WM.

When WM does cause symptoms, some of them can be like those seen with other types of non-Hodgkin lymphoma (NHL). For example, weight loss, fever, night sweats, and swollen lymph nodes can be seen in many types of NHL.”

American Cancer Society/www.cancer.org (Signs and Symptoms of Waldenstrom Macroglobulinemia | American Cancer Society)