• Hodgkin's disease, discovered by Thomas Hodgkin in 1832, is one type of lymphoma.
• All other lymphomas are grouped together and are called non-Hodgkin's lymphoma.

According to the U.S. National Institutes of Health, lymphomas account for about five percent of all cases of cancer in the United States, and Hodgkin's disease in particular accounts for less than one percent of all cases of cancer in the United States.

References:

• Information about detection, symptoms, diagnosis, and treatment of non-Hodgkin's lymphoma. NIH Publication No. 99-1567
• Information about detection, symptoms, diagnosis, and treatment of Hodgkin's disease. NIH Publication No. 99-1555

• Lymphoma Research Foundation
• Timeline of discovery and treatment of lymphoma