Cancers that start in the lymphoid tissue are called lymphomas (from the Latin lympha, meaning “water,” as in the watery appearance of lymph, and from the Greek oma, meaning “tumor”). The two main types of lymphomas are Hodgkin’s lymphoma (also called Hodgkin’s disease) and non-Hodgkin’s lymphoma. There are several different subtypes of both Hodgkin’s lymphoma and non-Hodgkin’s lymphoma.