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.
Lymphoma is a cancer that arises from the cells of the lymphatic system. In the brain, this type of cancer is called Primary CNS Lymphoma (PCNSL). Lymphoma occurs most often in the cerebral hemisphere, but may also involve the cerebrospinal fluid, the eyes, or the spinal cord.