Leukaemia is a type of cancer of the blood and bone marrow. It occurs when the bone marrow makes too many white blood cells (lymphocytes), which are part of the body’s immune system to fight infections.
The central nervous system (CNS) is the part of the nervous system that consists of the brain and spinal cord.There are many different types of cells in the brain and other parts of the CNS, and each of these can develop into different types of tumours.
Hodgkin disease is a type of cancer called a lymphoma. It occurs when certain types of white blood cells called lymphocytes grow in an uncontrolled way. Lymphocytes are part of the immune system that help our bodies fight infection.
Non-Hodgkin lymphoma is a type of cancer that occurs when certain types of white blood cells (lymphocytes) grow in an uncontrolled way. Lymphocytes are part of the immune system that help our bodies fight infection.
Soft tissue sarcomas are a group of cancers that develop from cells of connective tissue. These include cells that make up our muscles, fat, lining of joints and blood vessels. Soft tissue sarcomas can develop almost anywhere in the body.
Kidney tumours are also called renal tumours. Kidney tumours occur when abnormal cells in the kidneys grow in an uncontrolled way. The most common type of kidney tumour in children is called Wilms tumour.
A germ cell is the type of cell that develops into eggs (in the ovaries) or sperm (in the testicles). Germ cell tumours occur when abnormal germ cells grow in an uncontrolled way, and can develop before or after birth.