The genus Aesculus comprises 13-19 species of woody Trees and Shrubs native to the temperate northern hemisphere (with 6 species native to North America and 7-13 species native to Eurasia). There are also several hybrids.
Lymphoma is a form of cancer that affects the immune system-specifically, it is a cancer of immune cells called lymphocytes, a type of white blood cell. There are two broad types of lymphoma and many subtypes. The two types of lymphoma are described as: Hodgkin's or non-Hodgkin's.
Tweet. Share this. What causes lymphoma is not well known. DNA mutations may be what causes lymphoma to develop but what triggers these mutations is largely unknown. Family history does not provide much of a clue; except in the case of some rare forms, lymphoma does not appear to be linked to genetic inheritance. However, as lymphoma incidence rises and research accelerates, several risk factors for lymphoma have been established. We outline some of them below.