What is cancer?
Cancer is an abnormal and dangerous condition that occurs in the body.
Cancer occurs when cells in the body start growing and dividing abnormally. Our body is
made up of trillions of cells.
Healthy cells grow and divide according to the needs of the body.
As the cells age or get damaged, these cells also die. New cells are formed in their place.
When someone has cancer, the cells stop working in this way. Old and damaged cells
survive instead of dying and new cells start forming even when they are not needed.
These extra cells divide uncontrollably, resulting in a tumor.
Most cancers are tumors, but blood cancer does not have a tumor.
However, not every tumor is cancer.
Cancer can develop in any part of the body. Usually, it spreads to nearby tissues.
Abnormal and damaged cancer cells reach other parts of the body and start forming new
deadly and malignant tumors.
There are more than a hundred types of cancer including breast cancer, ovarian cancer,
skin cancer, lung cancer, colon cancer, prostate cancer, and lymphoma.
The symptoms and tests of all these cancers are different from each other. Cancer is
treated mainly by chemotherapy, radiation and surgery.
There is a lot more to this story:
https://www.quora.com/Can-you-stop-cancer-from-spreading
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