Question

What is cancer? What are the three main types of cancer?

Answer 1

Cancer is a disease occurring due to cellular changes that result in the uncontrolled proliferation of cells. The three main types of cancer are:

1. Carcinoma: When cancer affects the skin and the lining of other internal organs.
2. Sarcoma: Cancer occurs in connective tissues such as bones, muscles, cartilage and blood vessels.
3. Lymphoma: Cancer affects the cells of the immune system (lymphocytes).