Hodgkin lymphoma (Hodgkin’s disease) is an uncommon form of lymphoma that usually begins in a type of B cell, which are found in bone marrow, called a Reed-Sternberg cell. Approximately 95 percent of Hodgkin lymphomas are considered classic, a type that is further divided into the following subtypes based on its appearance in the body and under the microscope:

  • nodular sclerosis Hodgkin lymphoma
  • mixed cellularity Hodgkin lymphoma
  • lymphocyte-rich Hodgkin’s disease
  • lymphocyte-depleted Hodgkin’s disease

The other major type of Hodgkin lymphoma, called nodular lymphocyte-predominant Hodgkin’s disease, is very rare.