How many types of cancer exist in human body?
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There are more than 200 types of cancer and these are classified according to where they start in the body, such as breast cancer or lung cancer.
Cancers are also grouped according to the type of cell they start in. There are 5 main groups. These are:
Carcinoma – this cancer begins in the skin or in tissues that line or cover internal organs. There are different subtypes, including adenocarcinoma, basal cell carcinoma, squamous cell carcinoma and transitional cell carcinoma
Sarcoma – this cancer begins in the connective or supportive tissues such as bone, cartilage, fat, muscle or blood vessels
Leukaemia – this is cancer of the white blood cells. It starts in the tissues that make blood cells such as the bone marrow.
Lymphoma and Myeloma – these cancers begin in the cells of the immune system.
Brain and Spinal cord cancers – these are known as central nervous system cancers.
There are more than 100 types of cancer. Types of cancer are usually named for the organs or tissues where the cancers form.